Denuvo is there to prevent piracy within the first 90 days of release. Something like 60 to 80% of a game’s revenue is during that period. They don’t care that it’s eventually cracked, and they absolutely do not care about performance.

The bigger problem with Denuvo is that it appears to significantly impact game performance as well

I would hope that users would just refuse to buy games that use Denuvo and similar malware. I do, but I know most users don't care.

Why would they care for a few hundred MBs when the games are in the 10s of GBs?

Remove DRM and let buyers suffer less? Crazy talk.