As if that was of any relevance to the question whether many Qt developers are switching. Given that commercial licenses are only used by a very small minority of the professional developers using Qt (most using open source Qt), themselves only a subset of all developers using Qt… the fact that that small minority is currently increasing while remaining a small minority… doesn't say anything about the proportion of still Qt using developers switching away.

Besides, the sustainability of a temporary increase of that minority is highly questionable. Of course QTCOM's pressure towards Pay-to-Play temporarily forces some of those who are still tied by all of their still-Qt-based code to buy Qt licenses as long as they haven't finished switching to a better alternative… but on the long term most of them quit too. Precisely because of that.

We'll see how that strategy of maximal monetization and maximally squeezing developers works out for QTCOM in the long term