The decentralized aspects of blockchains are not ideal for many situations. Experimentation is fine but their highly inefficient databases and with bitcoin meant to keep time across a distributed network of small blocks anyone can run and monitor.

What people miss is all the other blockchains rely on high centralized databases connected to smaller "pruned" nodes. This introduces many points of failure. They also fail to take into account scarcity for the sake of scarcity doesn't make something valuable from nothing. It has been the unique sets of variables in bitcoin that have allowed it to grow and remain trust less. Also, collectables are also highly speculative. Bitcoin has had one singular focus and with its unique sets of cercumstances and the way it was developed make it one of a kind and bring its value. While fun to experiment with, everything else is just noise.