I have a pretty commercial we application and I want to use YouTube as my back-end to store videos which are being uploaded by users.
We want to even pay YouTube (Google) to provide extra quota for our users to upload videos through its API.
Is there any alternative to YouTube's api?
My first and maybe stupid solution was to have several YouTube Developer accounts and have a load-balancer server to amortize uploads within different Google Developer account and never run out of quota. But it is a technical solution not ethical and maybe would be in conflict with the YouTube API's term of services.
If your intention is just to store, you should use Google Drive Storage instead of YouTube.
Either way, YT API won't let other people to upload videos into your account.