I think the problem is not with smart phones, but with the ecosystem around them. Eg, Apple, and iTunes. Android, and google docs

I think a good example is cars. Imagine having a Ford car that you could only get repaired at Ford dealerships, that only took Ford bumper stickers or other accessories, and only could get filled up with Ford gas at Ford gas stations. I think most people would agree that would be a problem, and we are getting dangerously close to that with smart phones.

We're going in that direction with cars as well (EVs specifically).

What do you think of Tesla as a business and car company?

I'm not super keen on it, though I like Electric cars. I think that they will, or at least should, transition to being more open as electric cars become more common and in a larger variety.

You only have 2 choices for mobile OS, dominated by Apple and Google.

I'm willing to admit now that I actually liked Windows Phone and wish it had become a viable platform.

I'm on my Lumia 920 right now, due to my Nexus 5x finally biting the dust. I still love the OS. Most of the apps no longer work, my signal is crap, etc. But I still like the OS.

Same here. I was disappointed when they scrapped it.