There is a certain paradox here: at this stage of technology development, this is impossible, and when these technologies appear, they will be available to everyone and the casino will not have an advantage over any other games/projects. I think that the future of online casinos is the same factors that make it popular now: mobility, accessibility, weaker control from the state.
Online casinos make everything easy to do. There are many games available and of course this will increase the interest of gamblers to continue playing. In addition to the game, many of the graphics displayed are very comfortable and up-to-date. weak control of the state because online casinos are not widely detected as gambling and they online casino owners also do and register their gambling websites, so some countries will not block them.
Currently, there are many cashless gambling games. But behind all that, to get playing coins, you have to buy it from a retail coin seller or on their official website. this is tantamount to cloaking a gambling game by using internal coins.