To be fair, it is the bitcoin related companies that ultimately give Bitcoin utility (value), and whose opinions ultimately determine if any HF will be successful or not.
Bitcoin's future should not be determined solely by companies. It should be determined by everyone who uses Bitcoin, not just the big companies. If big companies are able to dictate Bitcoin's future, then it is not decentralized and Bitcoin has failed.
I would also point out that if the core devs (that work for Blockstream) stop their development work on Bitcoin, then others will step in. The bitcoin related companies already actively employ many devs who could easily take over.
First of all, please stop spreading FUD. The majority of Core developers do not work for Blockstream. Other companies and developers can step in and start contributing to Bitcoin Core at any time that they want. Nothing and no one is stopping them. If they wanted to contribute to Bitcoin Core and actually develop Bitcoin itself, they should have been doing that a long time ago instead of just shouting around on social media complaining about Bitcoin Core. They have had the ability to do something and yet have failed to do anything except harass those who are actually doing something to try to make Bitcoin better.