Most eroded trade marks were previously owned and registered. It's not the registration that gives trademark protection. Trademark protection exists to protect the market place. It prevents companies from piggybacking on someone else's success.
But if the consumer doesn't think that "Jeep" is a mark, but a form factor, then no one is protected from any misunderstanding and it would be no longer a trade mark. Happened to Motorola in 2005 with "flip phone".
I can't help but think society would be better served by using the court system for just about anything else including seeking damages from the gentleman who sold them the brooklyn bridge.
Both great examples of trademark erosion, tbh.
Think of 25,000 to 35,000 for a "Jeep Renegade" (which is rather common in Italy), vs. 50,000 to 70,000 for (say) a BMW X3.
https://www.quattroruote.it/listino/jeep/renegade
https://www.quattroruote.it/listino/bmw/x3
Speaking of the Renegade, they are manufactured in Italy, and have the same platform as the Fiat 500X, and they are largely 2 wheel drive.
Another one is "Yonica" for any synthesizer. Obviously "Scotch" (more for the tape, than drink).
But... What I really love is "Pampers" - yes this is the bulgarian word for... "diapers"... and many more...
http://gramota.ru/slovari/dic/?word=%D0%94%D0%B6%D0%B8%D0%BF...