Earlier quoted context omitted.
Your business's primary place of business is your home (referring specifically to the parent comment, not businesses in general). That you can also carry out the business where ever you physically are does not change that basic fact from a legal or tax perspective. Zoning compliance is not required for a home office (assuming white collar type work). Many, but not all jurisdictions require business licenses, even for…
What if I never do business in my home, but instead operate out of libraries, coffee shops, or client's locations? Picture a carpet cleaning van parked on the street, for example.
For a solo entrepreneurship business in the U.S., your home is your place of business if you do not have another fixed place of business.