Scarcity and liquidity are some of the main attractions of Bitcoin as an asset and monetary system; however, I hadn't seen any real calculations on when it will become 'essentially unbuyable'. This meaning that demand completely outweighs supply.

Some basic data points towards 2028-2032 as being critical years in Bitcoin's life, where it will become the first digital asset to be essentially unbuyable.

• Bitcoin has a max supply of 21 million
• 19.7 million has already been mined
• 3–4 million are estimated as lost forever
• That leaves about15M in circulation, but...

Only 2 million BTC are left on exchanges right now. A number that is dropping at an increasing rate.

What's happening at the moment:

• Long-term holders are stacking and not selling
• Big buyers (ETFs, institutions, whales etc) are pulling BTC off exchanges into cold storage
• New demand (retail + institutional) keeps growing, but available supply is drying up.

Based on current trends:

• Exchange reserves are dropping100k-200k BTC every year
• If this continues, exchange BTC could drop below 100k by around 2028-2029
• By 2030-2032, there may be days where available BTC is near zero unless sellers emerge
• At that point, you won’t be able to buy BTC without a large price impact: the price will have to rise dramatically to convince anyone to sell

What this means:

• Big price spikes just to get someone to sell
• Slippage on large orders
• Possibly insane premiums in bull markets
• Essentially: Bitcoin could become “unbuyable” in the traditional sense.