King Gillette's idea was simple and brilliant: give away (or nearly give away) the handle, then earn for decades on proprietary blades only it fits. Printers and ink, consoles and games, e-readers and books — the model recurs because locking customers into a high-margin consumable is enormously profitable.
But the model has a trap built in. The blade margin that funds everything is also a giant target painted on your back. The moment a challenger finds a way to deliver the consumable cheaper — or break the lock-in entirely — your strength becomes the wound. Razor-and-blades is a weapon that can be turned around on you.
The fat margin that makes razor-and-blades lucrative is the exact margin a challenger is coming to undercut.
When the model fits
Razor-and-blades works when:
- ◆The consumable (or recurring purchase) is genuinely locked to your base — competitors' blades don't fit.
- ◆Customers buy the consumable often enough that lifetime value dwarfs the subsidized base.
- ◆You can defend the blade margin against a challenger who'll try to deliver it cheaper.
The method
Subsidize the razor only as far as the blades justify
The cheaper the base, the faster you acquire — but every dollar of subsidy is a bet on future consumable revenue. Microsoft sold the Xbox at a loss because it could count on years of game and subscription margin. Subsidize to the level your blade economics actually support, not to whatever wins the launch.
Lock the blade to the base — legitimately
The model only works if rivals' consumables don't fit yours: proprietary cartridges, a closed platform, an ecosystem. But lock-in that adds no value (and especially that regulators or customers resent) invites exactly the backlash that breaks it. Earn the lock-in with a better experience, not just an incompatible socket.
Watch the blade margin like a hawk
Your blade price is the number every challenger studies. The fatter and more resented it is, the bigger the bounty on undercutting it. Track not just your margin but how exposed and how disliked it is — a 70% share at a premium price is a target, not a moat.
Have a response ready before the challenger arrives
When Dollar Shave Club and Harry's came for Gillette's blades, Gillette had no fast answer and had to cut prices and launch its own DTC under fire. Pre-build the cheaper tier, the subscription, or the DTC channel so you can respond in weeks, not years.
Know when to invert it instead
Sometimes the better move is the opposite: sell the base at a profit and don't depend on the consumable lock. Nintendo sold the Wii at a profit and won by changing the game rather than the margin. If you can't defend the blade margin, don't build your whole model on it.
- Your blade margin is fat, visible, and increasingly resented by customers.
- The lock-in is purely technical — no added value, just an incompatible refill.
- A DTC or subscription challenger is delivering your consumable cheaper, and you have no fast counter.
- You're defending the razor subsidy out of habit, even as blade revenue softens.
- Regulators or platforms are circling the lock-in that the whole model depends on.
Done wrong vs. done right
Gillette under siege
A century of fat blade margins gave Gillette ~70% of the U.S. razor market — and a price (and friction) customers quietly hated. Dollar Shave Club's $1 video and Harry's DTC undercut the consumable and the experience at once. Gillette, with no fast answer, had to slash prices and scramble into DTC, eroding the very model it had perfected.
Microsoft's Xbox
Microsoft sold the console at a loss on purpose, then earned on games and Xbox Live subscriptions — razor-and-blades run with eyes open, on a platform it controlled and kept adding value to. The lock-in came with a reason to stay, not just a socket that wouldn't fit anything else.
Same model, opposite outcomes. The trap isn't using razor-and-blades — it's building your whole company on a blade margin you can't defend.
Razor-and-blades: weapon or trap for you?
Two things decide it: how defensible your blade lock-in really is, and how exposed that fat consumable margin is to a challenger.
Question 1 of 4
Are competitors' consumables genuinely incompatible with your base?
Where this plays out
Gillette under siege
A century of fat blade margins — and the DTC upstarts who finally undercut them.
Done rightMicrosoft's Xbox gambit
Console sold at a loss; the profit lives in games and Live subscriptions.
Done rightNintendo's Wii
The inversion — sold the console at a profit by changing the game instead.