The problem will be resale, ease of modification and aftermarket, which is what makes the defender so popular, and have so much retained value.
With JLR heading down the same path as the other EU members with security and programing locked up, and going so far as to put the service books online , locking out any independent mechanics from it, to force owners to use only JLR dealers for servicing and repairs.
Want your replacement transmission to connect its ecu to your car, must see the dealer.
Keys coded to car, see dealer.
Service due notification off dash display, see dealer.
What's due in this service, its in a JLR server locked to others, so must see dealer!
This is not just JLR
https://www.accc.gov.au/system/files...ary%202017.pdf
https://www.accc.gov.au/system/files...rch%202017.pdf
https://www.accc.gov.au/system/files...ril%202017.pdf
New car retailing industry market study | ACCC