I think what we are talking about here is the potential, if developement continues, stability increases with growing market volume and use for ordinary transactions follow. I can agree that's a big "if". But what's huge is all of the barriers that have been removed that would otherwise make all of this impossible anyways.
It actually seems like BTC is becoming the "dinosaur" of crypto and those heavily invested in it are unwilling to recognize the improving blockchains and technology. Bitcoin may have been first, but that doesn't mean much when the tech can easily duplicated.
My view is quite the opposite. I think developement is continuing pretty much as I had imagined early on. However, I never thought bitcoin would go as far as it did last bubble and I didn't know it would even survive the crash.
Without the ability and willingness to evolve and adapt, you'll get left behind.
That's the key right there. The blockchain needs to continue adapting new ideas and survive in large due to its higher capitalization. The less valid new implemented improvements, the heavier the dependance on market stability.