Absolutely. If steam was pulling 1/10th of the stuff Google and Apple does on their marketplaces, that would be a problem.

The reason Steam is dominant is its better than the others. So long as publishers are unwilling to pass the lower cost of the platform into consumers, there is no incentive to change.

Also, Steam is the only platform that gives regional discounts in many regions. Its the main reason I don’t use GOG as much as I would like to.