Profile dating database
Most likely, they work on commissions, like telemarketers.
But Lugansk scammers are easier to detect by their photos.
Mari El uses photos of real girls, while Lugansk uses obvious photos of models, they smell scam a mile away.
There are also pro-daters, but they are not the same as scammers.
Sometimes the scammers change ISP (or simply hire new folks to do the job).
Then all scam, like with a magic wand, starts originating from that new ISP.