Things also have to grow for a reason, things don't just grow because of momentum (well, they can but it cannot be sustained). So even if we think less about the volatile spikes and parabolic growth every cycle of 2/3 years, we can't keep thinking the market will just grow over time simply because it always has been and because new coins will enter the market.
It's more meaningful to see in 5 years adoption rather than market.
yes, we really cannot hope we will repeat the momentum that occurs in the annual cycle. we can only see what's really happening in the market today. where market adoption does not support sustainable improvement. It may be that some coins can improve, but as you say, they won't last long.