I know that but the building itself gives 15 science. With edict, assist research, and governor bonus I could've bumped that number up to 23 or more. Not a big deal in the late game I guess but that's still 8 or more free science points wasted.
From not having the research institute on a planet where you're using all those buffs, you mean?
Well, you're already missing out not making your capitol a research complex since it's able to build the level 4 labs. Of course, doing so, you lose the level 5 mines/power plants.
Considering that the research lab only provides 9 more science than the building it would replace on a regular world, and only 7 more than the building it replaces on your capitol, that's really not much compared to the... 30 or so extra research your capitol can pump out compared to any other similarly sized world.