Not him but i'm pretty sure that's not what he or anyone making that reference means in this scenario.
Owning a bike or a car doesn't net one the relevant power of what one refers to when one says capital in this scenario. For example the NYPD mentioned gets millions in donations and i can assure you those don't come from gig workers who feel like they need more protection from them.
The crime described in the article hurts capital too. Many companies have to leave markets due to the costs imposed by the described criminality. This bifurcation betweem labor and capital is an invention of socialists/unions, to draw attention away from the exploitation that they demand.
Have you ever attended a local government hearing in a large city? It's filled with people on the dole, affiliated with a network of taxpayer subsidized nonprofits and social agencies, all promoting far-left ideological platitudes that the local politicians parrot for their own survival. There is no chance these companies could outlobby the forces against them. Basic policing in general is virulently opposed within these circles, I hypothesize because it precludes the alternative 'solution': more social spending, ostensibly aimed at solving the "root causes" of crime, but really designed to fill the pockets of Poverty Inc.
I think as a lobbying force to counter these destructive special interests, the best chance we have is property owners. If they organize at a larger scale, they could potentially fund their own army of local lobbyists capable of matching those of the beneficiaries of the tax payer funded social programs. Home Owners Associations already have some organization, and if they pool their funds together, could be a political force to reckon with.