>>107556939It's different for every corpo just like how it's different for every company irl but basically they provide some management, structure, initial investment and do some behind the scenes work like contacting and pestering artists for you while you give them a % cut of your income.
Some corpos make you pay for all assets, some don't let you pay for anything and some pay for X amount of things every so often and if you want more you have to get it yourself