Well the strategy isn’t new. VHS movies were doing it… and LP Records before that. However the tactic has not been all that successful in mainstream console games. It actually resulted in major losses for some companies (my favorite poster child being Working Designs).
Since preorder sales is the key item here - and not limited edition - Ubisoft is taking a road not always sought. Prince of Persia is also considered one of the “will sell more than a million games” type things (preorder goodies or not)… exactly how many above a million is the question… and what percentage of that is preorder is another. Remember: this is a console title that had a budget that cost millions to produce, and expected to have units flying off store shelves by the hundred of thousands. It’s not an eroge… which are peanuts in comparison. Eroge are happy to sell 50,000 copies. Console want at least 1 million, and prefer to have over 2 million. 5 million is always that magic mark only the best reach - above that is simply divine record breaking (GTA4 as an example).
Getting the preorder version (i.e. limited edition) costs the same as getting the regular version, so there’s definitely a profit loss in this. Even with eroge, the limited edition usually costs more than the regular edition. The idea is to attack the preowned market with it. The hope is that volume of sales, will offset the higher production costs. Of course if it doesn’t, don’t expect Ubisoft to repeat this ploy… and of course other companies watching the entire affair, are taking close notes.