Oh they certainly do but the SME lobby tends to have more influence. Repair shops are businesses, too.

And it's not always a good thing, e.g. when it comes to the Supply Chain Act the fat cat lobby was way more sane than the SME one: Nestle doesn't mind monitoring its supply chain for human rights abuses it's quite vertically integrated and the practice is a great defence against lawsuits and also getting fucked over / internal corruption while the SMEs are fearing bureaucracy and costs. It's not like slave farm owners would share their ill-gotten profits with Nestle, they pocket the difference to standard market prices.