What would most likely result from subjecting entitlement programs to the same annual authorization required to fund most other programs in america?

They would not be to government oversight is the result of subjecting entitlement programs to the same annual authorization required to fund most other programs in America.
The crucial about entitlement programs is that these are programs that spend money automatically unless Congress steps in and changes the program.

A partnership doesn't pay income tax as a business. It divides the income equally among the partners, who then pay income tax on their portion.