Hmm, You're right, i should update the description to make that more clear. In the beginning of this mod this was how it worked, however that caused some conflict with other mod's so i've decided to add 2 buildings. Both of wich have their own meaningful research upgrades.
Sadly infinite tech is not possible, as that would require infinite different roboports behind the scenes. that would cause infinite loading time. Currently there's support for up to 9 levels in each category. Should be plenty!
