Is this likely to cause sharing conflicts for the OC to try and sort out?
Well, yes, but it’s hardly insurmountable. If there are those numbers involved (unlikely) then there is tried and tested technology that shares the power supply among those who need it, limits car charging when domestic demand is the priority and – here’s the important part – the strata scheme can get the people who want it to pay for it (the installation, not just the electricity).
The potential for EV charging boosts the value of all the properties in the block, in the same way that having a gym does. Only a minority use it but most potential purchasers like to know it’s there.