Some countries, outside the US, supply 3-Phase power direct to individual apartments (aka "flats") in highrise towers. *[ Especially former UK colonies and the like, and also noted on this thread in some cases in US too:* [Why do I have three phase electricity?](https://diy.stackexchange.com/questions/30147/why-do-i-have-three-phase-electricity) ].

Isn't this a very wrong thing to do from the point of view of **stability of the grid supply**, because the currents in the phases will be **unbalanced**, compared to running proper 3-phase equipment/loads which automatically balance the phases? After all, what is the individual apartment dweller supposed to do with each phase? All his/her appliances run on single phase. Balancing the phases would be nigh impossible, precluding, of course, a wye-delta transformer for the whole apartment or house (let's ignore that possibility)!

Any thoughts?