I tend to agree with your overall point, but I’m not sure this supports it. To me, the difficulty in building things like parking structures isn’t indifference but the opposite: we care too much.
We care about the environmental impact. We care about the safety of workers. We care about the impact on local residents. We care about property values. All of those things create a layer of risk management, and the administrative overhead is what slows many of those projects down. If we were less risk adverse, we could get things done more quickly but we care about those things enough to manage them.
(To be clear, I’m not saying any of those are bad, just pointing out the natural consequence of caring about things and how it runs counter to the OPs point.)