I believe that at some point there was a discussion about this (on here and on github) and I was in favor of fees (and will continue to be), but I was against the percentage discussed at that time which was 10% (very high in my opinion) ... I completely agree that these percentages, especially the total, are unrealistic. Of course, behind this there must be issues of maintaining the viability of apps, but I still hope that this will be rethought in the future.