you can still make money with 290's
You can still make money with HD 7850s - and 7870s and 7870XTs and 7950s and 7970s - and even 7750s in a pinch though those don't make a LOT.
I do concede my R9 290s make more than any of the HD series (except possibly a HD 7990).
ETH probably has more GPUs working on it than ALL other crypto combined - and while ZEC is a Nvidia stronghold a lot of AMD cards work well there too, especially the older 2GB and less cards that can't do ETH anymore.
The recent modification to the AMD / GF agreement blows the cap off AMD's "can produce" max number, if they are willing to pay a bit of a premium to do so.