Seems unlikely CE products will ever secure against this
They'd have to either add shielding, which adds cost/weight, or add some extraneous computation (the "execute both sides of a branch and throw away what you don't need" type of strategy) which has its own set of problems.
Unfortunately a lot of key computation is in dedicated circuits, so unless you design your own you are reliant on what others sell. Good luck getting cutthroat vendors to spend extra money to defend against something like this. At least not until there is a high profile case of it being exploited in the wild.