there are a lot of places to watch video and they are expanding.

While this above statement appears true what we are seeing is agglomeration into silos like Disney hosting their films where eventually you will only be able to access the films via subscription.
The same is true for Time Warner etc.

Once you could see movies from all media groups on one platform like Roku etc. Those days are disappearing fast.

Maybe a cartel is a better description.

You will find movies from various outlets rotating between Roku, Sky and other platforms some of which are free on one platform but buy/rent on other platforms. A couple of months later and these same movies swap places and swap access to buy/rent.

It's the illusion of choice.