Why is iCloud still so painfully slow in 2023?

I really don’t get it. I’ve been using iCloud ever since its introduction and I feel like the upload/download speeds haven’t changed at all. Whenever I need to download something, especially videos, it just takes forever. I get that their size is quite bit, with 4K HDR, but still - WeTransfer, Google Drive, [name any other “cloud” drive] feels 2-3x faster than iCloud.

How do they get away with it?