This doesn't surprise me at all. When you develop on someone else's platform, you have to walk a fine line between not being successful at all and being too successful such that the platform provider co-opts your business (maybe you get lucky and get bought out). This is nothing new. Such moves as this were (IMHO) inevitable. They'll slowly chip away at anything they see as taking revenue from them. The part I disagr…
The problem with Twitter is the same problem that plagues innumerable startups - they've built a product without even once thinking about the business model, and are not scrambling for revenue.
Inexorably, everything they do in the pursuit of revenue is going to involve making the product worse for users. Ad injection, loss of 3rd-party apps that support the ecosystem, all of that is just example after example of how a business with no built-in monetization will eventually cannibalize itself in the pursuit of revenue.