So if they are making 32k a month, and lets say all the fixed costs equal around 5k per month... thats 27k for 9 people. That works out as a monthly salary of 3000 for each of them... surely thats a full time salary.
Firstly assume the the continuous dropoff from their Patreon income (let's assume 5k) so it is down to 27k. I think this is a fair and good estimate.
Patreon takes a 5% cut. That's about $1350 off per month.
27 - 1.35 = about 25.5k .
Their yearly income is 25.5 * 12 = 306k
Significant sunk costs such as video games, equipment, etc. Let's assume the mics are 4* 200, sound mixer is 200, new furniture is 500, and other equipment is 200. A well equipped PC, perhaps VR ready too and with capture cards, will be about 1000 - 1500. Assume purchasing video games, without the support of publishers initially, is about $100 per month so about 1200. There may be other costs I am forgetting too.
Let's assume a nice round 5k for this year.
Assume Brandon needs to pay for additional electricity and heating bills for using his garage in excess of normal use in business hours. This could be very expensive. Let's assume 5k for now.
Let's assume Brandon and one other person are working full time. Let's assume, given the high wages costs of LA, the years of expereince they have gardened, and having a superior work - hours - leisure balance they position their salaries at $50,000 each (perhaps less for the first year). That's 100k for full time wages.
We than have another 7 people (if Don is joing part time) who are working for EZA in differing capacities and hours. Let's assume they put in 1/4 of the time that the full time employees each put in. This means wages of 12.5k each. Assuming everyone works the same hours (there will be nuances and different circumstances) and assuming Don will work as well, that's 7*12.5 = 90k
Wages = 190k
Then we have tax as others have pointed out. I am not familiar with US Tax law, but let's assume a 40% rate.
They may have to take out various types of health and work insurance packages that may be made mandatory by law. This will be another large chunk.
Add in trips to expos (such as E3) and trips to PAX (to host panels and visit their fans) which will include accommodation, tickets and insurance. This is slightly mitigated by the fact that they live in SA.
In summary, this is a very expensive business venture to support more than, at the most, 3 people at their current Patreon income.