Not true mate.
There is existing PPC technology that can be used and bought cheaply.

The Shark by all account is just a rebadged Sonnet Crescendo and can be bought for a few pounds.

OS4 can be ported to PPC relatively easy.
It's the court case that is putting the mockers on that.

Adding a PPC to an existing Amiga can be done under the terms of the contract, but that does have the added complication of drivers and whatever to connect the two.

If either of the two problems are resolved, money shouldn't be a problem.
I can guarantee more programming to be done for OS4 as more people switched.

That's not to say there will be a timewarp back to the golden age of the eighties or whatever, that wont happen unless something major occurs.
(Think I will start a seperate thread for that.)

At the moment there is a split for Amiga Programming.

Amiga 3xxx
Amiga 4
MorpOS
AROS

Some coders produce for one or more, some for one only and some for all.

If for instance OS3 users were able to migrate to OS4 cheaply enough there would be several benefits.

More coders with neccessary hardware to produce for OS4
A bigger pool of users under OS4 to make it worthwhile coding for.
Perhaps more cooperation between MorphOS and AOS4 coders as they are both PPC based.

As has been said, the Amiga is very much a hobby and fanboy platform, so anything produced generally comes from within this community.
So it's obviously a benefit to have more cooperation.

Watch this space.