How familiar are you with the CMP, and where do you get this information? At least based on what I'm reading in your posts, you are not very familiar with how they operate and your info is way off.
The CMP's mission is to promote marksmanship. PERIOD. Everyone likes to get excited about the M1 Garand and 1911 sales but those are simply a source of income to help the CMP support its mission, as were sales of other firearms during the DCM era prior to CMP. Yeah there's a bunch of us adults regularly shooting matches, from young guys still in or just out of the service to old Vietnam vets, plus a bigger mix of pure civilians. However, given the DCM's and CMP's evolution over time we are not the focus either. CMP's main goal is to promote marksmanship for youth. I get this straight out CMP officers' mouths and have heard the same comments from various staff members. Promoting marksmanship was the original mission of the DCM, and it remains the mission today for the CMP.
Given the CMP's mission, it makes no sense that they would restrict sales to prop up the firearms industry. If that were the case, why the hell would they be selling M1's at a 25% to 60%+ discount vs. market and the 1911's at roughly half of market for govt issue 1911's? It's more an issue of limited armorer capacity for checking / refurbishing vs. very high demand. Their Service Grade M1's have something like a 3-4 month lead time now?
If there are millions of 1911's, how would CMP dump those into the market all at once? Front end loader into tote bins and auction by the ton? They are not some massive organization with logistics to rival Amazon. They are more like a handful of people working on a moderate budget and can only process so many orders at a time. At least publicly, they seem to be handling the usual high maintenance collector crowd and especially 1911 madness with much patience- way more than I would be able to muster.
Regarding ease of import- that has absolutely nothing to do with CMP. Were it not for the recent good fortune of acquiring the M1's in the Philippines, the Garand sales might already be history. The Greek returns have pretty much been sold and likewise for the Turkish returns. The M1 carbines and Garands in Korea do not belong to Uncle Sam, at least according to the Koreans. While we can argue that the Koreans are wrong, that whole possession is 9/10's thing comes into play. We are more likely to see that stuff come back via CAI or someone like Classic
than via CMP. The CMP does not purchase large stock of milsurps from 'private' hands.
If you are getting caught up in the online torches and pitchfork collector crowd who are highly critical of the CMP's 1911 program, take a step back and consider that the CMP is simply using the 1911's to generate revenue in support of their mission. Their ability to handle transactions is somewhat limited, so regardless of how many are 'out there', CMP will only be selling what they can manage at any given time.