Canada

Bit different. The condo is a legal company ,collects fees To operate the building maintenance and repair, insurance, snow removal, etc. All owners vote yearly on changes to bylaws, or projects to be done.
I.e.hypothetically there could be laws about no blue patio furniture, however if majority of owners vote for allowing blue, then it gets changed. Its an owner run corporation.

BC has strata corporations, which are kiiiiind of the same thing based on my shitty surface-level understanding of HOAs.

And basically all multi-family housing has a strata.

you usually get a lawn…

Fish don't need bicycles, and we don't need to hoard greenspace when it can be consolidated very well into something useful by so many more people.

At larger scale, consolidating greenspace surrounding clusters of effective dense mixed-use residential cuts land-use tremendously, re-wilds a lot of other space or returns it to agriculture, and achieves the density required for better transit and savings on infrastructure costs. The housing has to be effective, and I think the new "mixed-use consolidated over a transit stop" configuration is a definite winner ... as long as it's not wood (aka Fire's Favourite Food).