With all due respect, I doubt that it will have any affect at all. In the year 2012, there were 702 different items that LEGO sold to the general public. So far in 2103, there are 603 different items LEGO sold to the general buying public. You cannot tell me that a handful of "butt hurt" resellers will have any affect on LEGO's bottom line if more 41999s made it to the shelves. As a matter of fact, it will only help customer relations because LEGO will appear to be getting more of this sets out to the buying public.
LEGO is releasing more and more sets with each passing year. Going back about 10 years ago, LEGO released 415 sets and items in 2003 in comparison to 702 last year. As a LEGO reseller and investor, you have many more options...more than most resellers and investors can take advantage of. Many people want to pimp the obvious big ticket sets on this site and will cry foul when LEGO wants to put restrictions on them, but the truly savvy LEGO investor won't bother in the obvious and will score big dollars on less talked about sets.
When push comes to shove, I would bet that most people have very limited investment dollars to spend and limiting buyers to two exclusive sets will affect only a handful on the site. There are a multitude of excellent LEGO investment sets and most are never discussed on this site. Even a big time investor can get by with buying only 2-3 exclusive LEGO sets at a time because there are so many new sets released each year that will appreciate well if given the chance.
I do not know whether or not there will be more 41999s released, but it is quite possible. A pre-XMAS release would be a huge winner for LEGO and many fans, but for the long term LEGO investor, it really is much ado about nothing...