I started EDDiscovery and now develops it as free open source with many others.
We have no ads and no donations.
Income: 0.
Costs:
I have a server that mirrors some data from EDDB to offload bandwidth from EDDB. And EDD uses a foew other assets from my server. I use the server for other things so the yearly cost for me on this low EDDs share maybe 10-20 euro per year.
So EDDiscovery is running on a very low loss that i gladly pay.
No counting all time then i got later to work after working way to late with ED the night before
I know both EDSM and EDDB is running on a dedicated server. EDSM used to run on a much simpler cheap solution log ago but the responstime was very slow after a while due to the big resources the database takes.
EDSM is now using a dedicated server and its paid by donations.
You can see the cost for EDSM here:
https://www.edsm.net/en/donation
Actually its a little positive on balance now.
In reality Anthonet lost LOTS of money on it. I know he worked lots on EDSM for the love of ED and EDSM for free on his worktime instead of working on a paid project.
How the economy is for the others are i have no idea for but you will not find any 3rd part devs with fancy jets
