The time for minimal investment and maximum profit via Bitcoin is over. The days you could buy thousands or hundreds of Bitcoin for a few USD$ and sell them for hundreds or thousands of USD$ each will not return as you said so many people bought for under $100 and now see Bitcoin worth over $50,000.
I think it is obvious that many people missed on bitcoin chance
It's not obvious to me at all. Isn't it possible that there are still significant gains to be made on Bitcoin?
Not like we used to. I mean I agree that you could triple your money in bitcoin even if you buy now, you could even 10x in the long run, those are huge gains and I agree. However lets face it, there were people who bought under 100 dollars and the price is over 50k easily right now, that means people made insane returns, returns that will never happen, which is why I think people did missed their chances to make that kind of return, you can't just put few thousand and become a millionaire, that is long gone for sure. This is why I think it is clear that some people are trying to over risk what they are doing and trying to make that kind of return.
Investing into a casino is a great idea to do that, house always wins so being the house means they will always win and that is why making a decision to not leave here makes sense to me as well.