Answer by
LeheckaG (1826)
Depends on product/services & your-business-plan;
production-companies either:
Work for clients
(like a major artist/movie-studio/record-label)
who pay the bills
(provide positive-cash-flow).
Incorporate, Secure financing, and operate in-the-red/negative-cash-flow
until their-product is finally-completed, distributed, & released.
Taxes are much-more-complicated for in-the-red/negative-cash-flow operations.
A good-production-company contracts for all-expenses-paid & percentage-royalties,
sometimes own-copyrights/trademarks.
You require:
accountant, attorney/lawyer, business-plan/budget, clients/market, (incorporation &)financing, leased/purchased-equipment, cast/contacts/experts/staff/talent, sample-demo/portfolia, ...