Everything is possible, because it is not controlled by anyone and the bubble can burst at any moment. The whole growth depends on the activity of users, if the activity decreases, bitcoin will lose the advantage.
Yeah everything is possible and if you think that it's possible that bitcoin will be replace by an alt or let's specifically say ETH.
Consider first it's marketcap, it has the highest market cap and I really don't think that any of them will have a chance against with it.
And I believe that everything is possible to bitcoin when it comes to pricing, it can fly to the moon.