In its current form, DS9 is eventually going to fade from the public consciousness. Even on modern top-of-the-line displays, those old SD masters look like trash, and there's only so long younger generations will be able to stomach them. I can only imagine how they'll look when everyone has ultra-short throw projectors casting 120" images on their walls
It's definitely offputting, but Trek is one property I'd be willing to hold my nose and open my wallet for. I care far more about DS9 being available in the long-term, and for future generations, than my distaste for corporate greed
'Pay up now and fund this remaster we'll be able to profit from for decades, as this will be your only chance to get that show you like on BluRay... Until the superdeluxe re-release with even more stuff and a metal box.'
I love DS9, but there is something offputting about giving money direct to Viacom for a project like this, probably because it would set a bad precedent. Given how moneygrubbing they are, it would quickly become their go-to solution for any old show they want remastered rather than dipping their hands in their own deep pockets.
A crowdfunding probably wouldn't be that outrageous. The DS9 Documentary "What We Left Behind" that was recently released on blu-ray managed to raise nearly $650,000 on IndieGoGo. Imagine how much fans might contribute if it were guaranteed the remaster would happen provided the goal was reached.
Or hell, they could just shorten a season of Discovery by 2-3 episodes and that'd pay for the DS9 remaster in full (assuming the 8 to 8.5 million per episode for Discovery that was reported a while back is accurate)