I don't think that's a hard requirement.
Spreadsheets for example became normal technology long before we had a good open source one. And arguably we still don't have an open source one that's more powerful than the closed source ones.
Spreadsheets for example became normal technology long before we had a good open source one. And arguably we still don't have an open source one that's more powerful than the closed source ones.
I don’t fully believe that either, but I see where the point would come from.