> Try mounting a Nikon lens on a Canon camera, for example.

You can simply buy the adapter from amazon or almost any shop. You've really chosen a bad example because companies have tried to patent their connectors to limit production of these kinds of adapters and the courts always rule the patents invalid. Locking people in for cash is a common illegal practice; it happens and take time to remediate, but is and should be illegal.

> You can simply buy the adapter from amazon or almost any shop.

Not if you want to use autofocus.

Yes, even if you want to use autofocus. I don't really like posting product links, but you can google it. Maybe at some point in your past you were personally not able to find such a product and make a purchase and that may have shaped your ideas of the situation. Also they keep making new connector types to keep this arms race going. As I said, the law takes a dim view of such shenanigans and certainly protects interoperability.

There's little you can do with a camera, even if you're able to swap lenses from another vendor. There are infinite things you could do with a modern smartphone if had access to it.

So because phones are useful, lock-in should be prohibited? I don’t think that’s how the law reads. Should we also prevent lock-in for car parts, because there are infinite places to go in cars?

> Should we also prevent lock-in for car parts, because there are infinite places to go in cars?

...yes. Of course we should protect the personal transportation of hundreds of millions of Americans. And we do via the Magnuson-Moss Warranty Act.

In the same way, of course we should protect the primary form factor of personal computer for roughly a hundred of million Americans.

> Try mounting a Nikon lens on a Canon camera, for example. You might not like it,

Right, I don't. Things like these not being standardized when it would be so easy for them to be just so that one provider can make a little extra money selling their own peripherals is scummy and I would love to see it stopped. Apple does this, Nikon does this, both can either fix it or burn.

Also, what exactly is your point? That you admit Apple is doing anti-competitive things to lock customers in, just that you don't care?

just because something is a "common business practice" doesn't mean it isn't wrong.

There is a big gap between lock in by screwing competitors (Apple) and lock in by screwing customers. The latter can be solved by jumping ship and will resolve itself when enough people get pissed off and stop buying, but the former needs regulatory oversight

You can buy a Tamron or Sigma lens and mount it on a Nikon or Canon camera.

But if you buy an e-mount camera, you can adapt damn near any lens.