Proof of that, specifically.
In economics, vendor lock-in, also known as proprietary lock-in or customer lock-in, makes a customer dependent on a vendor for products and services, unable to use another vendor without substantial switching costs. Lock-in costs that create barriers to market entry may result in antitrust action against a monopoly.
It’s of marginal importance to me, but the ability to install virtually anything on the App Store reasonably confident it’s not going to break my primary communication device or exfiltrate my data (without my permission) etc etc is of far more importance.
I rely on my phone very heavily and the fact that it reliably Just Fucking Works is much much more important than being able to — for example — run Firefox on it