> Do merchants actually want to get rid of the 2-3% transaction fees?

Yes. Merchants want to get rid of the 2-3% tax. I've been going to Bangkok since 2014 and it usually had close to 100% adoption of credit card payments for pretty much all shops. In the last few years, more and more shops started charging 3-5% more if you paid with card.

In this last year (a few months ago), I was surprised by the number of shops that straight out rejected cards. They suggest you download their ewallet thing, and pay them through it (essentially paying the 2-3% tax through the ewallet) or going to the ATM and withdrawing cash.

The problem with stablecoins is not the market (the merchants will straight out accept them). The problem is the UX. With the ewallet, you just scan or get scanned and everything happens instantly. With stablecoins... oh it's a long story.

tl;dr: If stablecoins had a good UI/UX for P2P and B2C transactions, they'd have taken over.