Not sure that big business favouritism is the intent, but it's definitely more lucrative for them. Especially with Vimeo and other alternatives out there.
I remember when streaming took off in a big way - some on YT and others on justin.tv (later Twitch and now Amazon's Twitch) - and I thought you'd have to be objectively bonkers to rely upon an opaque and ever-changing algorithm for your financial future. Some have gamed it well, but it's pretty easy to see how they've survived - fake shock/reaction content, alt-light or worse content, polarising opinion, thinly-veiled advertorials, and so on.