Exactly, it would be absurd if you could lose a trade mark because you don't sue a company which has a very different trade make which barely shoes any resembla

Exactly, it would be absurd if you could lose a trade mark because you don't sue a company which has a very different trade make which barely shoes any resemblance with a clear different context around it. Only if your trade mark (or something extremely similar) becomes a generic trade mark would you lose it. But in this case not only is the trademark not extremely similar there is also no chance that it becomes generic at all.