The benefit is "Distribution". If your users are there, you want to address them wherever they already are, this is why apple store / play store / amazon store

The benefit is "Distribution". If your users are there, you want to address them wherever they already are, this is why apple store / play store / amazon store ... are so popular. Becoming a platform / ecosystem is the common playbook to go from being a one product company to an ecosystem / platform worth a lot more