I think there is this huge untapped demographic of potential IDA users: CTF players, tinkerers, hobby hackers. The ones using an outdated warez version now.
They would totally spend the magic $10 / month on IDA, like on netflix, adobe, dropbox, spotify.
I mean back in the day Immunity Debugger was AD SUPPORTED. And iirc Dave Aitel once said it made a profit. And IDA is much bigger than Immunity Debugger ever was.
So I think "$10/ month, noncommercial, no support" would turn a nice profit without impacting the other sales of IDA.
And I did have a private binja license, back when it was $99 / year. Now it has gotten too expensive for me.
Ilfak has to be careful: If everyone uses Ghidra at home, they will happily use it at work too.