In an increasing number of places, you don't (except perhaps by forcing or convincing someone to let you use their identity). Where I'm at right now, receiving SMS or making phone calls require a subscription with photo ID and physical address - prepaids and travel SIMs are data-only these days. The latter ones also require photo ID for service activation.

The whole rationale of the laws in these countries is that you shouldn't be allowed to get one.

If argue that it's the opposite as there is competition and in civilised European countries there is working regulation etc, not like the US where carriers are able to lobby and cheat to maintain their monopolies - case in point I have unlimited everything (Inc 5g, except MMS) in country and 64G in the rest of Europe for about 30 EUR/mo

Cheap is relative. I pay about $25 for 20GB, which lasts me a month. Yeah, local SIM cards might have cheaper options, but I'm not complaining about $25 a month. I spend more on a single lunch.

I don't consider $25 for 20GB to be "very high". Of course, you can find cheaper. But $25 is less than a lunch in most places.