I can't understand their reasoning. Why would they need an unlimited price cap on gTLDs? I can't imagine their expenses are that high and they're a non-profit so whats the incentive to increase gTLD pricing?
It seems their argument is that the New TLDs (the program they created that allowed the creation of .donut and .pepsi and such) doesn't have these limits, and it's unfair to the companies running the "old" TLDs that they do.
Which is a terrible argument, not just because an answer could be "then impose limits on new TLDs", but also because those new TLDs are new products which those companies have to pay for, market, etc, whereas the companies running the old TLDs are just maintaining something that was created by the public.
Probably the usual, the people running the non-profit have financial ties (direct or indirect) to the people who'd make money from increasing the price cap.
7/20 ICANN board members have ties to Internet Society (which manages PIR - the .ORG registry), to PIR directly or NeuStar (managing .biz registry). That was just from reading their bios on ICANN.
4/8 PIR members were connected to ICANN previously or are still active in some capacity (including former board member and former liaison to the board).
Which is a terrible argument, not just because an answer could be "then impose limits on new TLDs", but also because those new TLDs are new products which those companies have to pay for, market, etc, whereas the companies running the old TLDs are just maintaining something that was created by the public.