Why have dev`s made Circulating Supply so large for their coins?
Some are in the tens of billions & even trillions.
Why didn't they just follow Bitcoin at 21 million, or just limited to 100 million or so?
The reason i ask is the price movement over $1 on some of the coins with the larger supply will always be limited. On coinmarketcap there isnt any coin out there with a CS in the billions more than $2-5 max. The simple reason is the marketcap = price x CS. Your not going to get a bigger marketcap than BitCoin for now anyway.
For XRP for example to hit $100 it would have a MC bigger than the GDP of the US, of course thats not going to happen
You meant total supply, right?
Dev has various reasons why they made their supply big instead of issuing less tokens. Some may be their ecosystem needs a lot of tokens, and they decided to issue token with huge supply, but i think this doesn't really matter.
The value for the token comes from how valuable the project itself. It can't be a serious concern. It doesn't really matter how much total supply, and won't give so much impact.