It is competitive, but you don't see that competition because you flat-out tell people you won't pay them competitively. I would never consider Gitlab for that reason, it just doesn't make financial sense.
Money isn't everything, I've certainly taken a significant paycut to take a job I wanted and believed in. But I'd have to take a 50% paycut to work at Gitlab, so... no thanks. And worse yet, you'd openly pay a city dweller on my team twice as much to do the same work.