It's based on a campaign maker not needing specialist tools beyond what is already provided to them as part of the product in comparison to aircraft developers.

ED like any other company will only give tools to people that absolutely require them in order to protect their IP. Perhaps you care to explain why the SDK is so closely guarded even though they like to come across as supporting the map makers within the community. Its not rocket-science as to why they take the approach they have done.

You may say I have no evidence but you're not providing any either in your counter-argument, and as you've admitted in the past you're none the wiser than any of the customers. A lot of opinion is based on common sense but when discussing ED's business practice its often pointless because it seems to be something they use very little of.