Copyrights (rights to media content) do not lapse because of failure to enforce them.
Trademarks (the right to call your product a specific name) can lapse if members of the general public start associating it with a type of product rather than your specific brand. This happened with “zipper”, “jet ski”, and “popsicle”. But you can’t sue Grandma Smith because she mistakingly referred to an Xbox as “a Nintendo”.
Not making land yachts and not actively having a temper tantrum over the market transitioning to EVs might both be contributing factors as well.