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> connect their grid to their neighbors while allowing them to use their own regulations
Yes, and allow me ride public transport while allowing me to apply my own tariffs, right?
The whole concept of "common good" assumes that *sometimes* is makes sense to make loss financially in order for *everyone else* to benefit, but that includes yourself too. We pay taxes for public education and healthcare (well, not in US) because everyone benefits from that directly or indirectly.