Yes. Plus, that will make the software "eternal" - it won't simply die when the dev eventually becomes bored.
I really wonder what he mean with this. Would be awesome if Google or Eclipse or something bought it, and made it free & open source (not because I don't want to pay - I already have - but because it would make the user base explode. think of all the plugins!). But if that was the case, it wouldn't be any point discussing "upgrade fees" etc.
jps! :' Can you tell us Something?