Yes I think it's enough
Because each Bitcoin can be divided into 100,000,000 units Satoshis sats. 1BTC= 100,000,000 sats, so this means that there are effectively 2.1 quadrillion Satoshis in total
So even if Bitcoin gets to a very skyhigh price, there will be no need to hold a whole Bitcoin to your self. We can just make transactions and save in tiny fractions. so that's it, if Bitcoin had an unlimited supply like regular Money, it would lose purchasing power and value over time
Its limited supply is what makes its valuable and that is the unique feature Satoshi added upon all the technological ideas that follows Bitcoin. Deep into the feature, the value of every single fractions of Bitcoin will hold a valuable price, and that will make it remain valuable no matter how long it goes.