Sure but no one founded companies saying they were going to do exactly that until they actually had tungsten carbide tooling in hand and it was a production engineering issue.
What technology or research was the Boring company sitting on that it expected to utilize to get this advantage?
Which isn't the question: what promising things was the Boring company looking at? Not what they said they wanted to achieve, how were they planning on doing it?
Lithium batteries at all points were quite specific "we think <process> will reduce costs and make them viable".
What technology or research was the Boring company sitting on that it expected to utilize to get this advantage?