Your concern is based entirely on conjecture.
With the exception of the Roadster, we're only 10 model years in, far fewer for the 3 and Y. The people who bought at the beginning paid top dollar and for the most part could afford to do so readily. They also have the money to upgrade again as the cars got even faster, as well as longer ranged.
But if these cars were all falling apart like a 5 year old iphone, we'd be hearing the tales of woe by now.
You opened that door:
Here we go:
1. two air shocks, $1400 each
2. two new screens and MCU's $3500 each (claims denied by Tesla)
3. new wheels, 21's crack, warped and bend constantly, replaced numerous 21 inch tires @ $500 each - reminder this car has no spare
4. rear negative camber fix $1400 for new adjustable camber links, so the rear tires would last more then 8,000 miles on 21's
5. 3 headlight replacements (full unit) under warranty due to eye brow DRL death
6. 8 door handle replacements some paid for my Tesla, some by me. range $1100 to low of $300 each
7. rear taillight replacement (leaking)
8. front alt steering link failure $1400 each
9. paint peeling off red high performance brake calipers $800
10. new wheels $350 each X 3
11. new windshield (3) $1100 each
12. new charging cable for HPWC ($80)
13. new HPWC $250 (found a used one)
14. Car in shop for months waiting on parts after a minor fender bender ($7500), still there.
Other costs:
$3000 in property taxes each (Fairfax County Tax Thiefs) per year
$300 3 year EV Tax each
$500 in Uber costs to deal with issues, ever move a car seat to an Uber multiple times in one week?
my labor 8 trips to SC to have the cache flushed in my MCU, then get charged full price, for the recall.
Current 2016 has the following issues, major leather issues on seats that have never had asses on them (rear seat)
2014 is in the body shop and been there since mid December waiting on parts.
NAV shows i'm in another state, and slams on the brakes because it thinks I'm speeding in a 25 MPH zone when I try to use AP1
intermittent Air Suspension Sensor failure (Tesla, we cant find any issues),
Slow as Joe charging. again my time, 1 hour plus to charge the P85 and 50 minutes to charge the 90D on Supercharger
My time, treated like it is nothing...over and over.
Following lies:
Bespoke service for the Model S
Model S loaners
FSD
love the car... just not the "service"