Gitlab has introduced a five-user limit for free groups

Their pricing update end of last year was one of the reasons we switched over to Github. Other reasons were, that most external services had integration with Github but not with Gitlab, or that we didn't use many of the features Gitlab provided but charged for. If they would provide some lite plans with custom feature addons, we might have kept it, but all in all there was not much difference between Gitlab and Github except for the pricing then

And of course, github is owned by microsoft, so at some point it'll probably be bundled into their Azure/Office/Microsoft 365 nonsense. Then it'll be a no brainer to buy it because you'll already be getting it whether you like it or not.