Nobody wants a dozen different "movie subscriptions" just like nobody wants a dozen different "streaming service" subscriptions.
The value of the early movers/original services is that they gave access to EVERYTHING (or nearly everything) with a single login/payment.
Whatever value was originally generated by the first service is quickly lost as soon as everyone and their dog gets greedy, spins up their own special snowflake version of (service), and pulls their content out of the original service. This forces consumers to choose between signing up & paying for a dozen different services, or canceling everything and simply going back to the convenience & ease of piracy, which, incidentally, makes everything from everywhere available in a single location (value!).
The value of the early movers/original services is that they gave access to EVERYTHING (or nearly everything) with a single login/payment.
Whatever value was originally generated by the first service is quickly lost as soon as everyone and their dog gets greedy, spins up their own special snowflake version of (service), and pulls their content out of the original service. This forces consumers to choose between signing up & paying for a dozen different services, or canceling everything and simply going back to the convenience & ease of piracy, which, incidentally, makes everything from everywhere available in a single location (value!).