I don't get how it's okay to commercialize public side walks.

Can I just put a vending machine on wheels, park it in front of people's homes, and raise a 100M to replace convenience stores?

In many jurisdictions you can. The source article is from California, and under California law cities generally must allow street vending.

kurtis_reed 20 hours ago | parent | prev | next [-]

Guess what, human couriers use the sidewalk

	▲	pests 20 hours ago \| parent \| next [-]
		A vending machine is not a human tho.
	▲	vrganj 18 hours ago \| parent \| prev [-]
		Human couriers also walk on the sidewalk.

gverrilla 13 hours ago | parent | prev | next [-]

Public in capitalism means only "up for grabs".

Do you think roads are somehow commercial property?