In most jurisdictions for a merchant to adopt they will have to overcome significant resistance from their accountants and possibly risk debanking. How many consumers want to pay with BTC? SFA. And then there is tax compliance.

For most businesses it is simply more trouble than its worth to accept Bitcoin. The few who do accept I believe mostly are doing so on a principled basis.

So for the few merchants who accept I say support them- they are not enjoying an unfair marketplace advantage- they are sticking their necks out against considerable resistance and obstruction from the fiat debt slavery power brokers who still dominate governments and business circles.