Any individual can do business.Then what is the necessity for various frameworks like partnership, private limited company etc.,?

Any  Individual do the the business think his mind to open a resturant and he can manage all there is no necesity like frame work...

IF Any individual used his mind to do the business , he never cross the boder like various necessity of frame work  law and rules for documnetation . if he start partnership business and  he must search a partner and the same think in pvt.ltd. company.

The necessity for various