Richard ....
Although not YouTube related, Jay Currah ran into a similar problem financing his excellent web site about the
Lee Enfield Rifle, which disappeared from the Internet back in early 2013. On behalf of many collectors, we contacted Jay and he indicated that he had indeed closed his site. He said that the ISP, server and bandwidth costs to operate his web site continued to rise, while the amount of visitors declined steadily, so he couldn't justify its continued operation.
In order to preserve Jay's fourteen year legacy of historic Enfield research, we offered and he accepted, to resurrect the content of his web site at our expense and host it on our private servers for free.

So, Richard, if you get to a fiscally untenable point again, send me an email and we can look at hosting your content for free as well, on our specifically designed high speed video servers, for the benefit of all of our mutual collector communities.
Regards,
Doug