Wasn’t Netflix basically that? One store front for films and TV shows produced by different companies. Pay a flat monthly fee and get access to the libraries from every production company.
They’d probably get around that by having a ‘Promotions and Order status’ channel and a random / unused one like an ‘App update available’ channel. Promotional notifications should just really be banned.
Isn’t it inelastic (D changes at a less than proportional rate to price) or have I got it mixed up?