Re: adding unnecessary steps purely for the sake of legal compliance
I think you have misunderstood the swedish rental market (I live here)
Yes. There is state housing, for which you have to apply and there is a points system. ANd in Stockholm you might be waiting 20 years to get a place, particularly if you are picky about where you live.
But it's not illegal to rent privately. Far from it.
What is different is that your building (most people in cities live in apartments) or estate will have a board (normally a mixture of residents and a holding company). And they can set their own rules about renting. E.g one of my first buildings an owner could only rent an apartment out for 2 years maximum. They would have to let the board know, and they could theoretically say no to the person moving in (very rare). But at the end of 2 years, the owner either had to move back in, or sell (their rationale is that it allowed for people moving jobs, starting relationships without having to burn all their bridges, but they wanted a mostly stable population in the building).
Then the next place I moved - no restriction - owners could rent as long as they wished. There were rules about access, and overcrowding, but that was pretty much it.
So, absolutely not the case that you can't rent privately.
What might hold back foreign "visitors" is that most places want you to have a swedish tax number. For people who are just being shipped in, but are not residing inSweden, then yes, companies might acquire their own housing stock because those people will find it difficult to rent privately.