In the long term, the blockchain technology is very disruptive. Bitcoin will more likely compete with Gold, Ethereum will provide a backbone for many uses.
So I am not really sure a collapse is incoming, it depends if a real bubble will quickly form.
The market will never collapse because the price is still very profitable even though it might go down sometimes, every time the market price is dropping there will be more investors who are going to hoard coins so definitely the price will still grow up, volatility is the reason why every traders are getting rich today.
Well i'm not going to say never because you can't remove the chances of it anyways. But it's unlikely though because you're right, one, it's already an asset that many people consider very profitable. So much that price drops are considered opportunities to just buy back. Also, once it settles, i think it'll be more than an asset and will be used more as a transaction method.