I won't even guess at where you're coming from herschel_landes, or which shop you own, but if you were expecting the first piece of ordnance to land on your head from Melbourne well here's one from Sydney. The purpose of the clearways is to keep motor traffic off the tram tracks so that public transport
(not cars) can operate effectively and thus attract people out of cars onto public transport.
OK let's look at the logic of what you're saying. A 4 lane road, the middle two of which are tram tracks. You want parking in the kerb lanes, so where do the cars and trucks drive to get to the parking - on the tram tracks. Huh? Something's not right there is it?
For some years in Sydney we have had the equivalent of quarantined tram tracks in the form of bus lanes. Horror of horrors, these run alongside the kerb, not in the middle of the road. Definitely no parking there. Have Sydney's inner city retail strips collapsed as a result? No, not from this cause (maybe nearby Westfields and the like, but not from this cause). What do people do? They drive to the next side street, park and walk back to the shop they want. Councils also have planning strategies whereby they assist the shopping strips by getting land for carparks at the rear or similar so that people can park and shop. But of course if the public transport becomes more attractive because it is speeded up thanks to clearways then more people might actually come to the shops by public transport. Trams can carry 1000s of people more an hour past your shop than cars ever will.
Hey, the earth is round, not flat. Join us!