[JonLim]

Curious: is there anything fundamentally wrong with subscription services that cost $X a month?

It seems that it is a more sustainable business model (rather than relying on advertising and social media) because they're providing a service or product that has actual value to users, enough to have them open their wallets to the companies.

Unless there's something I am missing here?

[PaulHoule]

It's not a bad idea, it's just there are an awful lot of them and the average one is just average.