Ask HN: When does a startup stop being a startup?

I love Steve Blank's definition of a startup: A startup is an organization formed to search for a repeatable and scalable business model.

With that definition, we can assert that a startup is no longer a startup once they've found that repeatable and scalable business model.

I think that there a countless answers. I wrote about this exact topic some months back.

When the supply cabinet is locked

When the founder does not know everybody in the company by name.

When there is an "official" company email signature.

When a revenue stream has been found.

Whey they run out of money.