I'm still not sure I quite get it.
I'd say if you want food, buy it yourself
With what money? The people in the Studios will have to come into the office to make games every day, so they can't have other jobs. What little money they might earn (from some kind of government benefits? Donations from family members? Credit card debts?) is being paid into the Company. I'm not talking about food as in "snacks for the office", I'm talking about food as in "how do we avoid starving to death?".
- publishing costs are paid by all Studios as an equally divided tribute, just like any other Company's cost. It always works in the same way.
I still don't really understand this. Equally between studios? What if I'm a one-man Studio, and one of the other Studios has 10 people in it - will I pay 10 times as much into the Company as each of the people in the other Studio? What if my Studio is making artgames with a niche audience that probably won't sell very well, and another Studio is making a fortune with casual Facebook games - do both studios pay the same amount even though one is much more profitable than the other? Will the more profitable Studios be expected to subsidise the less profitable ones?
[I think all the marketing and stuff should be done after the game is done or almost done, as you're using the money from your workmates (the other Studios under your same roof) and you dont want them to waste their money.
This is a really bad marketing strategy, particularly for indie games. You need to be making as much noise as possible, as early as possible.
I think I might be missing the point completely, but right now I can't see why a Studio would join a Company like this. Umbrella companies might make sense for certain types of studios or developers (although generally speaking it seems to be more tax efficient for a studio to set up their own company), but Umbrella companies don't generally dictate that you have to work in a specific place, so that's a downside of this Company.
The Company doesn't seem to offer any help with publishing, either. Publishers pay the Studios to complete games, and then recoup their costs (plus profit) by taking a cut of the royalties, whereas this Company actually costs the Studios money during development, so the Studios will have to look elsewhere for funding to survive. The Company doesn't provide any budget for marketing, manufacture or distribution, aside from what the Studios themselves have paid into the Company.