The only people who would not try for this are the same people who try to win the game in under 10 minutes. Doubling or even a 50% increase is too massive to not stop by for, which makes it mandatory. Mandatory research isn't a decision, it's do it or lose. As some one who's lost too many games because team can't control more then 2, no res will kill you everytime. Economic research/upgrades in other games work because it's independent of weapon research most of the time, along with simply having much more indepth economy and various factors. Empires just has res, that's it. You can't expand on that really in a worthwhile way without changing a lot of empires core.