I agree with many of the comments regarding the plateauing of the progression a few prestiges in. For me, the easy option to overcome this would be to have the option to automate some of the manual tasks so the game becomes more 'idle' and progresses whilst you are away (other than a base cash increase). ie recipes auto match when cooked and/or auto cook when enough cash
 "Restaurant Idle"){kind=icon}
 "AdVenture Capitalist"){kind=icon}