There should not be any on-off ramps to begin with. People should just transact in XMR directly. That's what crypto was supposed to have been like.
Bitcoin and Monero have always been able to send transactions instantly and for Bitcoin, essentially free for over a decade with zero down time. That beats the pants off Visa and MasterCard.
Why use an inflationary currency that costs 2% to spend and takes 30+ days to settle?
Also, except maybe for purely digital there will be "on-off ramps" anyway, except it will be for real goods instead of fiat currency. The government can ban you from paying the gardener or buying milk with XMR.