Wasabi is a coinjoin and the money that would be made should be from coinjoin. I am not using Exodus because it is a close source wallet but it supports altcoins and it may support third parties sites that can be used to convert from one coin to another. Electrum developers are not making money from anywhere.
Do Electrum devs have any donation link? I don't think people won't mind if they do that because a lot of people are using their wallet with satisfaction and it's a pretty good wallet too, easy to use and almost idiot proofed. It's pretty good that they care about their servers but the devs need some love too right?