This definition doesn't work, because my only choice when buying a burger at Dairy Queen is to pay the burger's price or walk away too, but it's not taxation.
No, this analogy doesn't work because of switching costs. If I want a different burger, I drive across the street. If I want a different app store, I have to buy a new phone.
if the only way to use government services was to purchase either a dairy queen or McDonalds burger first that is a duopoly and they would be way more expensive and shittier quality than regular burgers as a result.
some smart alec would then point out that because even the cheapest, shittiest beef isnt free that this price is justified.
you have the choice not to purchase burgers from dairy queens, but from macdonalds, or five guys, or wataburger.
You don't have a real choice in an app store on android (except recently, and even then, the alternative stores don't behave well for google-based apps).
That's why it's not a tax when you choose to buy DQ burgers, but a tax when you choose to deploy an app to google app store.