Free electricity is impossible in the first place.
There is never free electricity but I think OP would mean the cost of electricity will be very low to the extent that it is more or less free. And this is one of the basic requirements of setting up a mining rig, the environment should be where electricity is less costly.
If the company who create the ASIC miners are the winner, then all miners are the loser, which is not correct. There are still people who become miners.
The thing here is ASIC mining developers are the ones surely considered to be profitable, the miners wouldn’t be losers but they are not all going to be profitable reason been that not everyone can get to mine. But those selling will definitely find buyers. So for the miners it’s a 50/50 chance which is not so for the inventors.
Of course mining can be very exorbitant and overwhelming when considered the taxes involved and the basis you can generate incomes. This is why there're less miners to traders and trading too is more technical to investment so there're also more investors to traders.
It's all to individual conveniences.
This can be attributed to the amount also needed for setting up mining farm or rig, many people do not have that capital to go into it or there environment isn’t friendly to miners, whereas trading requires just little amount of capital to trade
