I'm glad you have thought about this more that a moment. I am of course in steem and wish to promote it as we all benefit from building our community.
That said dtube does have some massive competition, Google has the best infrastructure, as much as we love this software it needs to be run on someone's computers. While they have global distribution of deticated server facilities and engineering teams.
Steem has to also build these kinds of relationships between people in order to compete with the Salery's corporations can offer. I think D.tube would have to pay for servers. IPFS is awesome but it's not quite at the same scale as YouTube.
While their demonetization is going to drive their demise we still have so far to go, I hope to contribute to the network by purchaseingg computers and earning crypto to host services! Like a good that lays golden eggs! Though a considerable investment it could eventually provide enough to provide for yourself and others too!
What if with @imlikett and you we run a campaign over here where all the funding goes to buy server space, I live in switzerland and hosting over here is quite competitive, though it does not matter where but rather a cheap and fast place. I know a server rack could go up to 300K but if some whales would support the cause we will do so much money.