I don't see PTC porting to anything in the near future. They have dropped support in the last few years for all of their Un*x systems. It would take a big chunk of money for PTC to port to a new OS, IMHO.
They are even dropping some Un*x OS servers from their Windchill family.
Don't hold your breath for a port of Creo to MacOS.
There is no business model that supports such a move.
Unless some company is willing to fund the port, I do not see any reason for PTC to invest in this.
You have Windows virtual machines for MacOS, use them and run a Windows version of Creo.
The reason Siemen's NX is on MacOS is that Apple funded part of the port back at NX4. They did not release the MacOS version to others until NX6. Apple has been a Unigraphics/NX customer since 1991 and committed fully to it in 1994 when UG V10 was released. Before the MacOS port, Apple used SGI workstations.
As I stated in my previous reply, Apple has been a Siemens NX customer since 1991 and fully committed to it with the release of UG2 V10 in 1994. At that time Apple used SGI workstations. After NX was released in 2004 or so, Apple and Siemens worked together to port NX to MacOS. This was released to Apple at NX4 and available for the general customer base at NX6.
With the current capabilities of Windows workstations and their lower cost, I do not see any Unix ports coming back to Creo.