Stealing? I see it as fee for an exchange to access to a huge market of wealthy people (one that can afford an iPhone probably can afford your app). Where entry barrier is extremely low. If you make 100 sales, you don't have to pay much, if you make huge profits off the platform you make huge payments to the platform owner.
They shouldn't have the right to be the gatekeeper in that relationship.
The wealthy people own the hardware, the devs own the app. Why does apple get the legal right to demand money in that transaction when it would be better for everyone if they weren't involved
So what about people like me? I buy an iPhone because Apple gatekeeps the apps.
I grew up in the age of torrents and Kazzaa and am tired of spam, malware, bloat, anti virus, etc. I want my phone to be an unbreakable toy, not a computing device.
