[KillerDiller]

Providers are not always transparent about whether CPU is dedicated or shared (and what exactly shared means). Most importantly, this distinction generally gets lost when people compare offerings of different providers, and so they end up comparing apples and oranges.

Next, when the actual "share" of a shared core is completely undefined, the idea that net performance can be improved by adding more of these shares becomes at least questionable.

Last but not least, one important takeaway from the speculative execution flaws is that a security boundary between software running on the same hyperthread is an indefensible position due to unmitigateable flaws.