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Tesla will sue you for $50,000 if you try to resell your Cybertruck in the first year
(www.businessinsider.com)
This is a most excellent place for technology news and articles.
Yeah for the people in question (buying ferraris/teslas) that blacklisting part might be deterrence enough. Still, even in that real estate covenant construction you mention, that 'something' they stipulate cannot be unlawful I think.
If they simply forbade resale, it would be an unenforceable term. The obligation on them to buy it back (at an agreed price) in order to enforce the term likely makes it legal.