In his presentations Antonopoulos said frequently that bitcoiners shouldn't worry about competition from altcoins because if an altcoin get some useful feature that gives its competitive advantage over bitcoin, bitcoin developers would just copy&paste this feature to the bitcoin code. It did make sense at the time.
However, I suspect that those times have gone. The whole agony of block size limit change shows that bitcoin code and bitcoin development infrastructure have already hardened and solidified to the point where any change, even as trivial, as block size limit, becomes difficult on the border of impossible. From now on we can assume that bitcoin code cannot be changed in any substantial way. No non-trivial feature, however important or competitive, cannot be added/modified anymore. Which means, chances of an altcoin replacing bitcoin becomes much more real. Which is bad news for everybody who invested in bitcoin heavily (financially, career-wise etc).
It's not trolling, I'm really concerned and I'll be happy if you can prove me wrong.
in some years we cant make anymore big changes, i guess you are right. that is a good thing. by that time, we will have bigger blocks, sidechains and other stuff which will do the improvements.