It’s not that I don’t think anyone would choose to repair their vacuum. It’s more that I can’t imagine they get enough volume to pay the lease/rent/bills on whatever commercial property they’re on.
Also, don't knock it, a quality vacuum like a Kirby or Miele will go decades, are incredibly quiet, and just need maintenance on wear and tear, which these repair shops provide. I think we got used to thinks being terrible. Like my Dyson, does good work, it's also very loud compared to my financially secure friend's Miele.
Which is wild because a Dyson has a premium price tag.