The Dutch and Belgian government quite literally are saying that you can't though. Of course, in practice it just means Dutch and Belgian players will pretend they're from another European country via VPN.
>Those gaming companies just have to accept that their products are a form of gambling and will be regulated and taxed as such.
I'm not sure if you're saying this in bad faith, are ignorant of gambling laws or truly believe this. If you were to regulate video games with gambling laws then that video game ceases to exist.
Nobody can afford to publish even a remotely complex game while following gambling regulations, because every single country makes their own rules on that. You would essentially be creating a game for one country only. And at that point why bother? Just push out another actual slotmachine. You cut development costs by multiple orders of magnitude and increase accessibility of the game.
Of course, in practice the countries that regulate it would just be banned. And the players would play the game via VPN.
Also, what I'm saying is that when dozens of countries come up with new rules some of them are going to do something stupid with them. You're asking for legally mandated region locks in gaming.
Just to be clear, I don't like these games either. I hate that game companies do this.