Stern saw how well received MMR was and decided to do the same. Why should they not profit from rerunning a game that has sold in the secondary market for almost double of what the original IM sold for?
The thought of some on here that how dare they rerun a game that is worth more because of supply/demand is short sighted. They should be happy that Stern is making more games and keeping pinball alive.
For Iron Man, there was speculation that the license would be hard to obtain since it now belongs to Disney. This completely blows that speculation out of the water and opens up to so many possibilities Tron Premium being the main one. If they can get Disney licenses; they can get Family Guy, Simpsons, heck they could even rerun AVATAR(ha-ha)