completely depend on the coin and their choice?
Apologies for the noob question. But is it a complete guessing game as to what future coins will use POS over POW?
Or is there a particular technology or movement towards POS?
Thanks in advance.
Its not a guessing game. It all depends on the code of the crypto. Mostly coins that you see which have PoS now, used PoW algorythm at the begining to gain the first coins in circulation.
PoW - requere miners to find and make blocks, which usually costs to much electricity when you have miners that compete between each other to make a block 1st
On the other hand with PoS you "stake" your coins and by staking you can create blocks and earn rewards. In general PoS is some kind of richer getting richer. As the more coins you have the more you will stake depending of the % that devs made, most of the coins have halfing of this %.
With POS you don't need any expensive equipment to be able to maintain the network, you only need your computer to be a node in the network (run it 24/7). So everyone have a chance to stake their coins without requirements to high electricity bills etc.
There are some other algorithms except POS and POW. Different devs are trying to find a better solution and balance between the cost to run and maintain the network and its efficiency. For example NEM uses POI or
Proof of Importance , there are other protocols as well.