If there 100's of alternate app stores, all with different revenue sharing agreements, payment processing systems, etc etc etc how are developers going to manag

If there 100's of alternate app stores, all with different revenue sharing agreements, payment processing systems, etc etc etc how are developers going to manage it all? Does a developer need to share their billing info with 100's of app stores? Seperatly agree to each stores terms of service? Seems like it will get awfully complicated awfully quick.