And their vote counts more than yours because they live in rural districts with lower populations. Smh at "democracy."
You're also going to have a large energized transmission network running over an area with extremely high foot and vehicle traffic - The low electrocution risk could absolutely be mitigated (unless there's damage, which is an inevitability for any equipment installed in a parking lot) but that's not going to be a problem because the entire electrical system is going to be ripped out by a junkie before there's a chance for anyone to get hurt...
Then there's also the additional complexity required to clean elevated panels like that, the difficulty in maintenance, complication to firefighting, the list of logistical issues goes on.
There's a middle ground though, which is to simply dedicate the lowest utilization portion of large parking lots to instead house standard ground solar installations. This is being done successfully in many places, as parking lot utilization is down across pretty much every commercial category post-covid so it's an easy decision to make (especially in locations like dying malls) and commercial buildings often have very robust grid infrastructure already and underground utility conduits (for things like the lights in parking lots). They're about the ugliest way to site a solar facility, but so much better than a parking lot...