Consistent 5/10 is basically non-existent on the east coast outside of the large areas (DC/Maryland, AC, Florida to a lower level). Being based in VA, I play in a lot of those rooms and occasionally MGM, and you'll basically never see a 5/10 game in VA except rare one's on a Saturday night.
2/5 is basically the "high end". But again, those guys ain't close to rich. Most are playing well above their bankroll and will only have a few thousand spendable in those games. In your smaller casinos, those are basically ultra-conservative games.
MGM National Harbor in DC and Live in MD tend to get a lot of Pros and frequently run higher limit games regularly compared to pretty much anywhere except CA or Vegas.