"progressing along a trend line to 1 trillion transistors per device by 2030"
I foresee a couple of problems.. First, as the transistor count escalates and feature geometries get smaller, the chance of device failure inevitably rises, as it can take only one transistor to burn out to degrade or disable the device. Second, as features get smaller, more numerous and more tightly packed, the chance of functional errors gets higher, not only due to externally sourced interference but as a result of internal crosstalk (particularly as clocking speeds also rise). We may eventually (soon?) reach a tipping point beyond which it's impractical to go if we want reliable devices.