No, but that's exactly what an "exit strategy" is, and an awful lot of startups are built around finding an exit. More often than not, that means building enormous hype and growth on a model that you know isn't sustainable, then selling it off just before it hits the apex and starts to fall, so the buyer can either dismantle it for parts or pare it down into something more realistic. Either way, you're leaving your users out in the cold.