I disagree with this statement. People who like paper version like to play online, because they cannot get enough of it (and for diversity of opponents, and for play at times that would be weird for live opponents, and (with rules-enforced implementations) convenience of not having to twiddle bits). Some people who play an online version eventually like it enough to buy the paper version to introduce to friends etc. I find it weird to concentrate only on the negative side of the online play (that some people are content with playing online without paying anything) while ignoring the positives (wider reach of the game, which leads to more sales).
I've been running an online adaptation of another game, and people told me they bought boxes because of it. Boardgamearena (a site with many adaptations) ran a poll a while back, which has shown that it's not isolated incidents, but in fact a sizeable number of people buy paper versions of games because they tried a game online first.
Claiming that the primary reason people play online boardgames is to avoid paying, and that it leads to financial losses of the publisher, is plain wrong.