What do you mean by saying if it works?

Porn tubes are dominating the industry for many reasons and the main one is that they give the surfers what they want and this state of things will not change any time soon, they work just fine.

I am not really sure about what you ask in your second question, but you should try to build a website and embed videos from PornHub and other big tubes first to save on the huge hosting bills and then once you are more successful you can host them on your own servers.