John Carmack's arguments against building a custom XR OS at Meta

I like that the top reply to Carmack's wall of text is a screenshot of TempleOS with a doodle of an elephant lmao. And ironically, that meme reply is on topic and it says a thousand words with just one photo.

Another point I would add in support of that meme comment, is Google's recent rug-pull of Android not allowing sideloading apps from unsigned developers anymore starting this autumn, after over a decade of conquering the market with their "go with us, we're the open alternative to iOS" marketing.

The conclusion is to just never EVER trust big-tech/VC/PE companies, even when they do nice things, since they're 100% just playing the long game, getting buddy-buddy with you waiting till they smothered the competition with their warchest, and then the inevitable rug-pull comes once you're tied to their ecosystem and you have nowhere else to go.

Avoid these scumbags, go FOSS form the start, go TempleOS. /s but not really

In other words, unless God has specifically called upon you to build an OS, and maybe provided divine inspiration and assistance, you should avoid doing that. Seems to support Carmack's point!

I'm not sure Carmack's point disagrees with you. Meta is still big tech, and if your goal is to monetize at scale, rolling out your own isn't the most efficient way to do it. I don't think he'd discourage you rolling out your own OS if it's your hobby FOSS project.

Unless its for love or devotion, there's no compelling reason to create a new OS in 2025. Certainly that could change in the future but I think his observation (if I understand him correctly) is correct.

Can you explain the TempleOS meme reply?

I don’t know enough about its history to get the joke.

Just google/youtube the history of temple OS and its creator. It's fun, sad and tragic at the same time.

Spoiler alert: a single person coded it in his own programming language, but the person suffered from severe mental illnesses and ended up taking their own life.