I mean e. g. that business using btc gets a tax break for maybe five years or pay half the tax of fiat companies. If they pay their empolyees in btc. They will then raise the btc-pay and the employees will happily accept it and a circular economy starts.

Nothing else will work, in particular politics, btc-messiahs, public speeches and billboards will not work.

Note that most small businesses in El Salvador run on cash and pay no tax so what I say apply to bigger businesses.