This story isn't about the "mobile smartphone" market - it is about Apple abusing their control of those phones to restrict the "iOS Apps" market.
These are separate markets. Customers that want to buy software for their Apple-branded general purpose computers cannot buy Android apps, so there is no overlap between the markets. Software developers may choose to participate in both, but that means the have to create two separate products.
What matters is is if the customer can switch their business, and not the size of the respective markets which is what those iPhone market share numbers indicate.
These are separate markets. Customers that want to buy software for their Apple-branded general purpose computers cannot buy Android apps, so there is no overlap between the markets. Software developers may choose to participate in both, but that means the have to create two separate products.
What matters is is if the customer can switch their business, and not the size of the respective markets which is what those iPhone market share numbers indicate.