Lets look at a popular Altcoin right now that is Chainklink LINK.
Its price now is $24 and a max supply of 1 billion.
So if Chainlink were to pass $33 price today then as of today then you are saying Chainlink is better than Bitcoin for example?
You can not use chainlink as an example in this case, it has different price, different demand and different supply, it is another coin entirely and not bitcoin. Only bitcoin is used as an example if its circulatory supply is assumed to 18.6 billion instead of 18.6 million while other factors are assumed to be as it is now. Also know that the value of a coin is in its demand which will reflect in its marketcap, the value of a coins is in its marketcap.
I think the marketcap would be lower than the current one, because a billion of coins would be perceived as less scarce than the current max supply, even if in both cases the supply is limited. On the other hand, having lower total supply could also have negative effects, if it was too scarce, like let's say 10,000 bitcoins, it would be viewed more as a collectible rather than a currency or a store of value.
If people embrace bitcoin the way it is now at reduced supply or increased supply, not the marketcap that will be affected, it is the price that will be affected, the lower the supply the higher the price, the higher the higher the supply the lower the marketcap. But anything that will affect the demand will affect the price also, the higher the demand the high the price, a coin with no demand will not have price increase and will be a dead coin.
if it was too scarce, like let's say 10,000 bitcoins, it would be viewed more as a collectible rather than a currency or a store of value.
Yes, if not demanded for. The 21 million max supply just make bitcoin perfect.
XRP prices are still too expensive, because if the supply of bitcoin is more than 21 million pieces then the price might be the same as Doge coin, because the high price of bitcoin depends on the existing supply and demand from exchanges or other platforms, basically the more difficult it is for us to get goods it will be more expensive.
Never compare doge with bitcoin, bitcoin is more demanded for, have more marketcap, even if assumed bitcoin having the same supply as doge, the price will be higher than doge price.
The total supply number of Bitcoins has no impact on the price. Even if the total supply was a trillion, one bitcoin will still cost $32k at the moment.
You are wrong, the price will reduce if the supply increase, with the same demand.