Right, as someone working in an online casino, let me correct you a few times here.
" The online casinos are rigged. There is no element of chance about them at all. The house always wins. "
The house always wins is true. All of those games list their RTP (return to player), which is usually around 96%.
This means when you bet a eur, the house has already won .04 cents.
Most of those games are not maintained by the casinos (operators), but by game providers and there is no reason any of those can or would conspire against you. They might work together to plan tournaments/promotions.
" And the 3 day wait time is arbitrary. They do that because they know you can’t keep winning for 3 days straight and the longer you wait the more chance you have of losing. "
It actually isn't, there's a lot of regulation regarding anti-money laundering practices etc.
Verification of your account is necessary by law and in many cases is done manually and even when verification is needed is legally set.