Youtube is an amazing service, but the ads are getting more annoying. I just watched a 15 minute video with ads at the start and middle. I wonder how well dtube and dlive can scale. They already struggle with playback sometimes. Youtube have massive resources to give a good experience and that costs. I pay for Netflix and I wonder if I'd pay Youtube for the option to lose the ads, if that was available in the UK.
Of course the distributed services are taking part of our rewards. I think they need to make that much more obvious. I expect some people don't even realise they do this. Storing and streaming video is an expensive business and we have to decide how we want to pay for it.
You're 100% right on the expenditure bit. Video is basically the largest chunk of data on the Internet. It's also the most expensive to store and serve. One high quality video, is the equivalent of hundreds, if not thousands of blog posts with just text and photos.
The big bottleneck with DTube the IPFS server issue, so how do you store so much content, and serve it on-demand. Like you said, Google/YouTube have near infinite resources and just throw money at the problem. Lets wait and see.