This is still not correct. The original claim was “every single business on the planet”. That’s ridiculously overstated.
Even if you massively narrow the scope to only businesses that have iOS apps that make money directly through the app, it’s still not true. The 30% specifically applies to buying digital goods and services through iOS apps.
Take Uber, for instance. They make vast amounts of money through their iOS app. They do not have to pay Apple 30%, or 15%, or anything beyond the basic $99/yr developer account fee. They absolutely do not have to pay 30% for access to the platform.