well - you can get the cable that you want

I have personally run into the HDCP issue several times. I have run into the power issue once. The HDCP issue comes up often with active converters who don't respond correctly to the HDCP requests.

Both of these issues that I described are very hardware dependent - different manufactures approach standards differently. I have seen HDCP issues where the display never came on, or would come on for 10 seconds and then shut off. Also, HDCP should only be active when you are trying to display protected content, but I have run into instances where it was active at all times.

The power issue, I ran into that with a large monitor wall solution - the company provided a computer that could drive 24 displays at once, but couldn't handle active HDMI repeaters.

I have been a television engineer for a long time - making different displays work with different sources is a lot of what I do. Personally, I would try and address the problem that the DVI to VGA is having, because that is how this is supposed to work.