I think that there have been discussions, but everyone being on this one-big-complex-cpu-doing-everything train over the years made companies pursue financial g

I think that there have been discussions, but everyone being on this one-big-complex-cpu-doing-everything train over the years made companies pursue financial goals rather than security. You cannot have a complex and secure CPU. That would be too expensive, so it's not a question of will-it-work, rather will-it-sell.