in fact, regulation almost NEVER impacts on liberty.
Wait, I'll be at liberty to get ISP service from a provider who guarantees Netflix streams don't hiccup and preload at blazing speeds?
I'm at liberty to accept a job for $3 an hour if I value the experience?
Regulation, pretty much by definition, must constrain liberty. It prevents people (working in corporation and without) from behaving in the way they would prefer. I think what you believe is it doesn't impact liberty in a way you think is valuable. Problem is, I might not agree.
Business aren't people and don't HAVE freedoms...
This again? Businesses have rights because from a legal perspective, a business is a group of people and people don't give up their rights by joining a group. So a business has a right to free speech because the people constituting the business each have an individual right to free speech. Legally treating a business as a person is just shorthand to make things easier.