Earlier quoted context omitted.
They pretty much lost because free (subsidized) alternatives like Google Maps became available, pretty much the same story as Netscape. It probably didn't help that their maps were also incredibly expensive, €100-200 for western Europe in 2005 money.
Netscape disbanded as a company in 2003. Why is TomTom still here? I like the questions at the end of a company since a large market I work in (insurance / life insurance) is dwindling as well. What does that do with companies? How do they communicate? What happens when the inevitable shrinking sets in and your brain drain is faster than the way you shrink? Should you ever actively terminate a company and tranfer IP…
Because they are selling raw map data to Google, Bing and Apple (maybe?).