Yes, absolutely. RAWs are for editing only and are pointless for any photos you know you're never going to edit again. Which is the vast majority of photos, unless you're an odd person. (Note: you may not ADMIT that you're never going to edit them, but I'm talking about what you actually truthfully might vs. won't)
I keep RAWs for shots that my (occasional) clients liked the most or that I like the most, basically stuff in a portfolio or that I think there's a good chance somebody might ask a special request version of in the future. Everything else, jpeg. Or deleting in every form forever for many not-very-inspired and not-client photos. Even if focused and exposed correctly.
Definitely if the photo was for somebody else, you need to keep a larger proportion, because you don't know other people as well as yourself and you can't predict which ones might need to be edited as well, so allow a larger fudge factor.
I sure wish I had one of these
so I could be positive in the future that I wouldn't need that original digital negative.
I don't mean at the level of "Oh this great picture of a forest I'm totally gonna edit, but this great picture of a church I'm not gonna edit."
I mean more like "This is a second or third tier image, it will NEVER be great from editing, so I'm never going to care enough to re-edit it."
Sort by levels of quality, and you'll very rarely regret it in my experience. Not by content (who knows about that / yes you would need a crystal ball)