Frankly, I can't say your business prospects are going to be high If you're asking here about what software you are going to be using, that kind of question tells me you have no idea what you are doing and have little to no knowledge about business management.
If your looking at eSports then https://www.ggleap.com/ is a good place to start, it has one of the lower price plans out there @ $29 a month for 20 users while giving you a large number of features. Profitability is really going to be based on your area and the amount of traffic you can sustain, eSports requires top-notch hardware and buying the latest games in multiple licenses so the initial cost is quite high unless you can get lots of players to pack Consoles in and use...