I would far sooner just bet with a site that is licensed (there are a few of them around now), and has syndicated games from Microgaming or Betsoft that have their games tested and accredited by independent labs.
As for the license case, having a license doesnt mean that the site is actually fair but rather it is about the gray area of legal and illegal cases. Most sites around here is not licensed but that doesnt mean that they are not fair , the same thing applied to the site with license.
You are missing the ability to check your bet if you truly win or lose if there is no provably fair mechanism on the site. Having a shiny badge of either Microgaming or Betsoft in a gambling site is nothing but a gimmick either because no one truly knows whats behind the scene either (no offence but this is reality).
Standard would be the ability to verify your own lose . However most people dont know how to do it because it is quite "complicated" for them or they are too lazy to just copy-paste some seedhash, therefore people should just educate themselves about these things and accept these new industry standard
I think that at the end of the day you have to find a reputable casino because even the PF system has been gamed.
Or people can just simply educate themselves and check the provably fair thing by themselves but yeah this is too much hassle for some people , no doubt about it
But that's the thing, even if they know how to do it people still aren't going to go and check the result of every one of their hands - it's time consuming, and it's a pain in the ass.
As far as licenses, I'm not sure you actually understand what it takes to get a casino license - it's not just a pay-your-money-get-your-license type of deal, there are actually standards that you have to meet in terms of the way you operate your site (relating to things like fair gaming, financial practices, problem gamblers, etc.). The games that licensed casinos offer have to go through testing and get verified by independent auditors before they will get approved. Basically what I'm saying is that yes, people do know what's going on behind the scenes because its their job to know and they're professionals. Casinos have enough of an edge as it is, why would a multi-billion dollar company like Playtech or Microgaming risk their reputation but having crooked games?
That said, you're right, not that many sites are licensed... so why trust these ones? I'm pretty sure the likes of bitcasino.io doesn't restrict any countries, and they're games are a whole lot better (Playboy live dealers!!!) than the rudimentary provably games out there.