Annual Property Assessment

Have you ever asked yourself why annual property assessment for condos are much higher than that of a landed property ? Doesn't make sense does it ? When it comes to landed properties, the local council has to maintain the roads, drains, landscaping, contract out services for garbage disposal, etc. These services are not accorded to owners of condos. Why then are we paying a premium on our assessment on top of paying our condo management a monthly maintenance fee ? Are condo owners being exploited ?