[adrian_b]

You are right that this is very important.

Also this does make this 180 nm variant much more useful.

There are many kinds of interfaces or analog devices for which such a high-voltage process is absolutely needed.

Now, you can design a complete chip set for certain applications, e.g. with a central chip designed with the 90 nm Skywater PDK and one or more peripheral chips designed with the 180 nm GlobalFoundries PDK, for power management or various interfaces.