Nope, you got to use your Z7.If they keep/start lowering the Z 6/Z 7 pricing It will leave a bad taste in my mouth. I, possibly stupidly paid a high price for my Z 7. The resale falling as it is if Nikon adds to this by lowering the price I will loose confidence in Nikon. Another thought, If the firmware updates stop I think the Z 7 will become an afterthought.
While at a lower cost, I will be a year or two behind you. So you will have used your Z7 maybe two years longer than when I finally get mine.
The "early adopter" model is not uncommon, especially in electronics.
Just look at the prices of larger flat panel TVs, compared to what they were 5 years ago.
I think the mirrorless model for FW has been set.
The vendors are expected to update the FW. And unlike hardware, they can add stuff that did not make the initial release date. And some of the features of a new camera model can be ported back to an older camera model via a FW upgrade. Olympus ported back some of the technology/features of the EM1X to the EM1-mk2 via FW.
But like other things, they will hit a point in time where they won't ADD more features, just fix bugs, or even stop completely. Upgrading the firmware does not bring in any revenue, just more cost. And they will want you to buy the new cameras.
I have perfectly functioning computers, but Microsoft stopped support for Windows XP. And I can't install the later versions of Windows on those computers, cuz they require MORE system resources to run. And since MS has dropped support for XP, so have the various software vendors. So, MS made those computers obsolete. Thus forcing me to buy a new computer.