Paradox Interactive's relationship with the comedy sketch group Door Monster is also pretty nice to see. It seems clear that's not strictly a business relationship, but also someone at Paradox being genuine fans.
I think there's actually a bit of a sliding scale between personal patronage and corporate patronage. Local businesses sponsoring local plays, concerts or sports events is another example of sponsorship which isn't likely income-generating.
That's not a diss on Nebula. I think, among all the others, nebula is the most likely to be sustainable. It is creator owned and operated and the pricing model model seems like it is able to make decent money for the people on it.
No affiliation to Nebula, just a happy, paying customer.
FWIW - it seems like the campaigns are working. You seem to be familiar with the brands and someone below chimed in on how one particular brand is great. Multiply that by the viewership - that’s definitely a win.
Some quick (unverified) research tells me that YouTuber marketing pays somewhere in the range of 30-70 CPM. You can pretty easily calculate that against google AdWords with reasonable conversion assumptions to decide if it’s worth it.
So many of them are now-dead VC-backed startups, but here and there you find a sponsor that still exists (Squarespace, for example).
The food related ones are always the most amusing because you know it's all fake bullshit and the host doesn't actually use the product, because nobody does.
The problem with the sponsorships you mentioned is they are all broad scale B2C where "everyone" is a potential customer. So you end up with channels that have nothing to do with the product promoting the product and it just comes up as disingenuous. When the hosts of Syntax are telling me that I should try out Sentry, Sanity or any other product in the web dev space, I'm much more confident that it's a legit endorsement based on experience rather than just reading the script.
[1]: https://syntax.fm/