It's not common for contractors to screw people over, at least around where I live, but there's always a few bad apples. 

The ones I bought for the next deal are as well, just want to make sure you're comparing apples to apples.

Put an old hard drive magnet on the end of a 1x2 and swing it through the yard, or get one of those fancy magnetic rollers from the hardware store. 

I buy what I like or know, products I trust or use for example (Amazon, Starbucks, Apple).

On the other hand, there are some bad apples that gives everyone a bad name but that happens in any business.

IF Tesla did get cheap enough then Apple or Google will come in and buy them so you won't be left with a car with no company to support/service it.One other food for thought, IF Tesla can get autonomous cars on the road in the near future your car would go from a depreciating liability to an income generating asset (although I'd never make a decision on that rosey outcome) if you're willing to let your car be part of the tesla Robotaxi fleet when you're not using it.

I also believe that careful tenant screening will weed out 80+% of the bad apples right from the start.

Apple, Tesla, Oracle, Samsung, Amazon, have yet to open their new facilities here.  150+ people move here a day and all based on jobs, jobs, jobs.   

There are dues/a toll to be paid for making it in America.Steve Jobs, the founder of Apple, once said: “People think focus means saying yes to the thing you've got to focus on.

Compare apples to apples and oranges to oranges.