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One advantage of Amazon's ARM is that it doesn't do hyperthreading, so when you rent a "thread" you actually get a full core rather than half a core.

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Or in other words, when your ARM without SMT stalls, the execution resources are wasted, as Xenu intended. Letting another program use the functional units unused by your program is an abomination before Xenu.

Which ironically would probably prevent adoption of ARM. People care about and compare core counts.

Get a single core ARM instance for almost the price of a double core x86 instance. Not a great marketing speech.

No, it's the opposite. An ARM core is much cheaper than an x86 core so you can get more cores for the money. And an ARM core is cheaper than an x86 thread while providing more consistent performance.

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