Exactly.I can't help but look at your three points and wonder what that has to do with the secondary market. Maybe I have the wrong idea of what makes up the secondary market because what you describe above is what I think of as the regular market. The producer sells the packaged cards to the distributor, the distributor sells to the retailer, and the retailer sells to the consumer. If my retail store is selling individual cards or I'm selling my individual cards, that's part of the secondary market.
But I'm only buying from the retailer if I think what I bought will have value.
I.e.
Box set costs $50, between playing and random distribution of cards I get $50+ value, I keep buying from retailer.
If because of overprinting or whatever, the value I get from buying a $50 set is only $25 bucks, then I buy less from the retailer, who will order less from distributer, who will order less from the producer.
WotC loses money.

