Well and Kirk talks about selling his house in Generations when in the Nexus with Picard, Scotty talks about buying a boat in TUC, Jake talks about selling his first book in DS9, etc.
Obviously an economy exists, as does property rights, possessions and presumably scarcity.
to add to that, other examples of this private economy
George Kirk's corvette. Should have passed to his children but was taken by his widow's new husband in the Kelvin verse.
James Kirk's hubless motorcycle. (given to a shipyard worker)
Ash Tyler had a sailboat. He mentioned it though it wasn't obviously seen.
There is a means to inherit things, as Georgiou willed a previous antique telescope to Burnham, who than gave it to Saru.
Budweiser still makes beer in the Kelvin Verse, so at some point at least, they did in Prime.
Earth Cargo Service: the boomers weren't doing their dangerous trade altruistically
Vulcans have private property, including homes, personal items, and pets.
Baron Grimes apparently owns an arms dealing empire and somehow acquired a title of minor nobility.
Harry Mudd owned a moon at some point and gave it to Stella Grimes.