One other problem is the enforcement. While I like the idea to pay by scale how can unscrupulous customers be forced to pay the right scale?

So buying one core, 2GB license and then deploy on 32 core, 2 TB server? The lockdown has to be in the code which could be buggy or lead to side problems (it needs cycles to check that the underlying hardware hasn't changed etc).

So a simpler licensing model becomes an engineering problem. Nothing that can not be solved but imagine the outcry that MS interrogates your server...

I guess there is no real easy answer to this dilemma.