Robert M. Gary wrote:


I don't believe the interface is open. No one else can get into the
biz. This is what generated several law suites against Atari and
Intellivision when I was a kid. Someone just needs to challenge them
in court to open these interfaces on the basis of anti-trust.

The interface doesn't need to be open. CompanyX needs to sell
the Garmins and Honeywell/Bendix/Kings, and Chiltons of the world
to convince them that they should allow the support (or push for
a standard interface). That's all part of what a free market is.
There's no artificial obstacle from someone getting into the biz
other than the fact that Jeppesen has been doing it for a very
long time.