Apple is a monopoly inside the IOS platform, they set the rules, block anyone that they don't want in it and then release their own version of the product using

Apple is a monopoly inside the IOS platform, they set the rules, block anyone that they don't want in it and then release their own version of the product using closed APIs. They are not a monopoly looking at the OS mobile market but they are inside their bubble which has grown big enough to be considered decrimental to the users and developers