Apple was never going to allow the blockchain to remove their 30% cut on these purely digital items, as much as crypto folks preached that the blockchain would remove us from the shackles of App Store IAP payments.
edit: for those paying a broker fee, does Apple even take 30% of that?
yeah arguably if apple wanted to say "you're doing a forex trade in app, TD Ameritrade makes $10 in fees on that $20k transaction, we deserve $3 of that, and it needs to be paid via our IAP scheme" that's a consistent application of their rules at least.
again though, coinbase's PR department is doing what PR departments do, they've got you talking like coinbase would be charged 30% of the whole transaction and that's not actually what Apple is saying here... just like it turns out Qualcomm may not have been entirely honest about ARM's licensing changes and many of the specifics of EVGA's complaints are highly misleading or specific to their (atypical) business model, despite a generally-correct thrust.
Like, kinda funny that grown-ass adults don't understand that a literal PR department might not always be presenting the situation entirely fairly... and this is a business community we're discussing that in, no less. You need to apply critical thinking about why someone might be saying things now, and why they're saying them in that particular way... they're happy to lead you into a wrongful conclusion even if they themselves haven't said anything technically wrong: that is the conclusion they intended for you to draw and you consumed the information uncritically and you did draw that conclusion. They walked you right down the garden path there, give that PR guy a raise.
Just like Sony can argue for app-store openness on Apple's platforms but argue they shouldn't have to open their own platform to competitors too... they want to keep their 30% cut but force their competitors to give up theirs. And no, consoles are not sold at a loss anymore, PS5 hit hardware profitability around 6 months after launch...