And, let's say 5 years from now around 2025, 30% of the US population is using Bitcoin for 30% of their purchases and financial transfers/transactions.
you are forgetting that this also means billions of dollars of infrastructure would also be in place for example gigantic exchanges, payment processors and all kinds of other companies. it is like wanting to ban computers (that would shut down Microsoft, IBM,...). something like that simply can not happen specially when bitcoin becomes bigger. the same billions of dollars would be redirected to pulling such rogue government down.