I don't see why not, there is netflix and they are making a success. Streeming or watching content on DTube sounds like great fun.
But on another note do you prefer DTube or DLive? Reason why I'm asking is that I want to start a vlog but always strugling to upload to DTube?
Hmm, thanks for sharing your opinion :) to be honest with you a few months ago I had a lot of trouble uploading, but recently it's been really smooth. From time to time it does still stall (perhaps bandwidth or a lot of people uploading or just a broken internet connection), but all you need to do is re-upload and it should work the second time around.
Start doing some vlogs! :)
Start the vlog! Upvoted :)