Once people discover that writing a Windows app will
do just
as well for *both* platforms, the need to write a Mac-specific one
simply evapourates.
Why is this a bad thing?
Are you kidding?
Because it makes the Intel Mac another Windows PC, that's why.
I really couldn't care less whether one crappy proprietary OS displaces
another crappy proprietary OS. Maybe one is a little better than the
other, or maybe even a lot, but I'm not throwing away my money on either.