Yeah, but most of that happens whether or not your product is acquired or not. Acquisition may, and often does, accelerate the process, but almost every application eventually suffers from loss of focus, feature bloat, and changes within the industry. Those that don't tend to stagnate completely and get replaced when someone re-invents the wheel from the ground up with a few improvements. I mean, forget that happening to GitHub, that will probably happen to git in 10 years or so.