That's the crux of this entire article in one sentence. This might be an upopular opinion here, but right now the supply of developers overall [across all industries] is much lower than demand. No one is forcing a developer to work for a game studio. It might be your dream job, but if you're not treated well you're a highly talented skilled worker, go work for someone else. Let the supply diminish because of the working conditions and alternatives and suddenly studios won't have the option to treat their employees this way.
edit: typos