There is already lots of surveillance and was even before modern technology. I'd agree that having some at all is of value, my argument was that you don't need much past that to get what we need and certainly don't need the kind of pervasive surveillance that some want: It won't move the needle on crime much past a baseline level but it will enable abuses that are much worse than the level of property crime we see today. Authoritarian governments are the number one mass murderer throughout human history by a wide margin.

Low clearance rates for property crime are significantly because nothing is even done much of the time -- police just take a report and often won't even follow up on an obvious lead (including stuff like "find my phone says my thousand dollar phone is in that house over there").

But in any case to more directly answer your question: If the clearance rate is 15% then they have a 90% chance of being caught after ~14 crimes.