On Mon, Nov 27, 2017 at 11:49 AM, retired mainframer <
retired-mainfra...@q.com> wrote:

> It must be nice to be able to tell a customer you don't need their
> business.
>
>
​ROI - It depends on how much the customer is willing to pay you to keep
from paying IBM for the upgrade. If they have a system which "just works"
for them, and they have no strategic direction for the "mainframe",​ then
perhaps paying to maintain the old software is worth it to them.

However, I am confused as to why they would want to invest in a new machine
but not invest in new OS software, but Mark said "just don't go there"; so
I won't. Perhaps, as I recall from many years ago about a DOS shop (sysprog
basically rewrote 80% of it), they have so modified OS/390 2.6 that it is
no longer recognizable as OS/390.


-- 
I have a theory that it's impossible to prove anything, but I can't prove
it.

Maranatha! <><
John McKown

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