I have been trying to figure out if embassy and neural net are routinely worth the cost or are they just a drain on the economy (esp. playing maso where money is tight). Here is a strategy I have been using but I wanted to hear if it makes sense to others. On a recent game Earth had revenue of 98 and spending of 136 so I built both embassy and neural net. It seems logical that . . .

If embassy boosts the economy 5% on a planet, then would it make sense to build embassies on all planets with 40 bc revenue? 40 bc x 5% = 2 bc so does that mean than on a 40 bc revenue planet that an embassy "pays for itself" because the extra 2 bc per turn is the maintenance cost of the embassy. If so, one might be getting the star influence and the morale boost of the embassy "for free" (or at least paid for) by the economy boost.

The same might be true for a neural net that gives a 10% economy boost. Might it make sense to build these on planets with 50 bc revenue because 50 bc x 10% = 5 bc which is the cost of maintenance of neural net? Is one getting the 25% research boost "for free" because of the economy boost of neural net?

And how does this interact with revenue cap of planets, which I read is about 4x PQ?

Please share your thoughts. Am I overlooking something in this strategy? Thanks in advance.