Microsoft isn't my favorite major multinational corporation (hint: I trust none of them), but they created this to solve actual problems.

The "problem" being "how can we create a scheme to ensure our continued dominance and control, but with plausible deniability."

> but they created this to solve actual problems.

Viruses that bypass the OS and work over your boot loader. They created this to solve other problems they also created. Every famous rootkit I can remember was due to sloppy coding or flat out intentional backdoors in their product (Sony).

Then they help get UEFI off the ground to essentially really broaden the attack surface they just "solved."