It also significantly hampers progress and the utility of tools themselves.
This is hacker news after all. What made the computer great was programs. What made the smart phone great (smart) is applications. It's insane to me that these companies are locking down their most valuable assets. The only way this works is if you're omniscient and can make all the programs users could want yourself. This is impossible considering both individuality and entropy (time). Both in the sense that time marches on and the fact that you don't have time nor infinite resources to accomplish all that. I mean we're talking about companies that didn't think to put a flashlight into a phone but it was one of the first apps developed. You could point to a number of high utility apps, but I'm also sure there's many you all use that you're unlikely to find on most people's phones.
We can also look at the maker community. Its flourished for centuries, millennia even. People are always innovating, adapting tools to their unique needs and situations. To some degree this is innately human and I'm not embellishing when I say that closed gardens and closed systems are dehumanizing. It limits us from being us. That person obsessed with cars and makes a sleeper Honda civic, that person that turns trash into art, that person that finds a new use for every day objects. Why would you want to take this away? It even hurts their bottom lines! People freely innovate and you get to reap the rewards. People explore, hack, and educate themselves, dreaming of working on your tech because of the environment you created. By locking down you forgo both short term and long term rewards.
I also want to add that we should not let any entity claim to be environmentally friendly or climate conscious that does not create open systems. No matter how much recycling they do. Because it is Reduce, Reuse, Recycle. In that order. You can't reuse if your things turn to garbage and reusing certainly plays a major role in reducing.