Musk is a genius creating really exciting ideas. No doubt about that.
But as they say,"the devil is in the details"
- Can Starship transport people from London to Sydney safely economically, compared to Boom, which is working on a supersonic passenger aircraft ?
-Why can the boring machine dig tunnel at much lower cost than it's competitors? Maybe it's because the everyone else tries to dig tunnels for trains, which have a much larger diameter than Musk's boring machine, which only fits his "Teslas at a tunnel" concept? And it might be a good idea. Worth a try. But be honest about it.
-Sure, data centers in space probably have some great uses, and I'm happy he's trying, but will they ever be more economical than deploying servers on the ocean? On countries with very cool climate?, powered by new energy technologies?
Boom is not a serious endeavor.
They have not committed to an engine. There is no engine commercially available to buy and no engine producer has committed to creating one.
I'm not sure I understand. From a quick google search it seems like they are designing and manufacturing it themselves (with a few partners). Am I missing something, or is your information out of date?