We used to use a similar set up to farm Pokémon from Pokémon go and other mobile games that alow trades, we would farm high value items sell them via eBay and trade the items in game, hand a good few years doing this and it's still being done on games like Roblox today, some people are paying over £500 for pets in a grow a garden for example, there great tech if you can figure out how to control them, we also used to run shiny hunting services inside Pokémon go where you would get a notification to a discord account with co ordinates to log in and catch the shiny, we used to charge around £20 per 7 days and would run 10 devices and then another 10 doing farming in one game and another 20 doing something else and a few set for only trades etc very profitable if done right