[pbhjpbhj]

FWIW it's not true. You don't lose trademarks by letting others use them, you lose trademarks by not paying your renewal fees (or genericisation: but that's actually protected against by trademark use).

This is not legal advice; this is my personal view and in no way relates to my employment.

[ben_w]

Also not a lawyer, but it is either literally what that boss said or very close to what he said — he may have used a different expletive, but he didn’t seem to be a fan, and I have every reason to think he was sincere.

[pbhjpbhj]

It's an oft repeated myth/excuse. I guess it lets TM management firms rinse clients for larger management fees.