This because transistor density allows for two things, but Intel is only pushing one of them.
First it allows for more compute power for a certain price.
Second, it allows for a set compute power at a lower price.
The second comes because you can stack more chips on a single wafer, and so get a bigger yield out of each production run.
I suspect Intel avoids that one because it will inevitably lead to a race to the bottom.
This because transistor density allows for two things, but Intel is only pushing one of them.
First it allows for more compute power for a certain price.
Second, it allows for a set compute power at a lower price.
The second comes because you can stack more chips on a single wafer, and so get a bigger yield out of each production run.
I suspect Intel avoids that one because it will inevitably lead to a race to the bottom.