Why not?
TESLA is 53B$, Facebook is 435B$, Microsoft is 535B$, Apple is 799B$...
30B$ is no where big already. I think bitcoin has the potential to surpass facebook, microsoft and apple. That means we are still in its early phase. Even if we catch up with Tesla, that means another %100 increase in prices. Doesn't sound impossible to me considering the pump going on lately.
The only thing bothers me is the fees with small transactions.
Bitcoin is not business, nor a company. The closest term what we can call BTC is 'a service'.
The truth is, Bitcoin is the unprecedented step of creating cryptographic money - every direct comparison to existing technology will be misleading.