[lupire]

It's a terrible idea (for the companies) that sounds clever.

It's one thing to offer your product to "friend" companies for dogfood feedback. But pressuring stablemates to use the product creates a fake product market for that distracts from building good product, and invites the investor to sacrifice your company to help a different one. But you don't have stock in that other company, do you? If you want the companies to share fate, merge companies.