Let's not pretend that Spain of all places is caring about horribly destructive psuedo-gambling.
Banning "unregulated gambling" is just pressure to make sure that the Spanish gambling racket stays intact for the bookies already at the top.
Is this intended to imply that Spain has particularly high levels of sports betting, or issues with gambling? All the stats I can see suggest the opposite, and there's already plenty of tight restrictions on local gambling businesses (sports sponsorship ban, welcome bonus ban, almost no public advertising, etc). At a quick google, it looks like the 'Spanish gambling racket' for sports is tiny, gambling problem stats far lower than UK/France/Italy, and most gambling that does happen is the lotteries etc instead, which has its sins, but is a very different beast.
Is there something specific you're getting at?
Not a fan of lottery myself, but at least it's just some random numbers drawn from a drum. There is hardly any dark pattern or illegal incentive there. It is just you against Thomas Bayes.
La Quiniela, a lottery based on soccer matches' results. Every middle aged man filled some weekly forms (win for locals/draw/win for foreigners) as if it was a religion. If you matched 14 from 15 results (much better with 15), you could get a big prize. Also, Jai Alai matches on the North of Spain had huge bets on results too.
Younger millenials and Gen-Zers will just play on RETA which is kinda the same as La Quiniela but online.
I feel like this might be a net negative from the pure speed and access in which you can lose money online vs real life, but idk.
I've played a couple of times solo and in group but never sticked to me.
No related to the point, but what it did stick to me for one season was La Liga Fantástica from Marca ( a fantasy league on paper) when I was a child, because it had the data component, you had a budget to pick players etc, This was before we had internet broadly, if I remember correctly the paper would publish huge lists with the teams ranking or the players stats. But what I do remember was some of my best players like Zalazar :D