It stands to reason that I don't need to remind people who are developing alternative clients or supporting alternative solutions how a free market works because they're actively engaged in the spirit of the free market and not trying to preserve the status quo at the expense of personal freedom.  Why would I tell them what they can already clearly understand?

I say it when I see people who still haven't grasped the concept.  It's hardly my fault that the most frequent offenders are the ones who believe Core developers have some sort of dictatorial right and that anything that isn't Core is inherently bad.  Stop giving me a reason to say it if you don't like being reminded of how this system works. 

The market isn't some process of elimination.  Just because one entity has a significant market share, it doesn't necessarily mean other entities are wiped out.  As long as there are people out there who aren't absolutely certain about Core's roadmap, or feel concerned about developer centralisation, or whatever else they're unhappy with, there will be continued support for other proposals.  I'm sorry if that's somehow unacceptable to you.  But I can assure you, berating other people about ideas you happen to disagree with won't prevent them from looking at other ideas.  Core need to win these people over by proving that their product is the best in the market.  That's down to them.