Not only that, the size of the supply matters too, though there are coins with huge supply that are successful, investors would still prefer to invest in a project with only millions of supply. Of course limited supply or fix supply is better, just like bitcoin, it's a good model to follow for a project to be successful.
Supply though is just one of the factors to look into, but most of the coins that rises high in value are those with low supply, so as long as you believe on the project and you like the supply, you should invest on it as these kind of coins are good for long term hold.