think btc has good chances to survive and even increase in value, since fiat isn't worth the paper its printed on in a crisis

like hua_hui said, there might be problems with illegal activities and exchanges might refuse them in order to avoid troubles

is there a future in mining? isnt it getting more and more expensive over the years?

I'd bet against your theory

Banks will joins as soon as they can earn money with them

I think the product thats easier to trade will be more succesful in the future, XetraGold for example is a share backed up with gold thats easy to trade but only a few people know about it.

I dont even get the point of your theory, why should someone offer kryptostocks? I'd always prefer common stocks since they are not correlated to any currency or federal bank anyways.