I was super annoyed when they first took away the links. "Pages are more dependably available now," is such a lazy excuse. Storing the cached content probably wasn't even that expensive for them, as it didn't retain anything beyond basic html and text. Their shitty AI-centric web search was likely the main reason for getting rid of it.
I definitely miss the cached pages. I found that I was using the feature very frequently. Maybe it's just the relative obscurity of some of my hobbies and interests, but a lot of the information online that shows up in search engines seems to come from old forums. Often times those old forums are no longer around or have migrated to new software (obliterating the old URLs and old posts as well).
If you’re looking for a replacement, there are a lot of similar apps out there you can host yourself (And therefore can’t be killed) or pay a fee to have hosted for you.
Google's money is a bit scummy these days, and definitely not something that should be relied upon long term, but I hope Google are making some kind of monetary donation.