This is true, by virtue of the name's newness and "I've never heard that word before" reaction to a lot of names.
This makes finding a good name even harder than it might seem to be, when you go and look for a name that is not registered.
Furthermore, getting a new name known can cost huge sums (millions of $) and also take years, hence why new ventures spend time carefully deciding what that name will be, because the wrong one could bankrupt them before they've even taken off. And they won't even know the name they have chosen isn't the right one when they decide on it.
However, in certain situations with the right audience (say 18-30yr olds, or vertical markets/groups), the target customers could do much of the publicity/spelling of the word. And given how everything is typed now (social media, websites, websites in adverts, texting everywhere, online chat, emails), there is no shortage of people who can readily show how a name is spelled (sans the people who use abbreviated & bastardised language in their texts).
Finally, a thought occurred to me: who listens to radio anymore? Isn't radio largely dead?
I suppose podcasts have taken over what used to be speech radio, although I can't listen to these as I fall asleep.