Let's see how long until altcoins hit zero.

Total cryptocurrency market cap: $2.94 trillion, stablecoins $300 billion.
So, excluding stablecoins, the total market cap is:

$2.94 trillion - $300 billion = $2.64 trillion;

Excluding stablecoins + top 30:

$2.64 trillion - $2.5574 trillion = $82.6 billion

The final situation is: stablecoins: ≈ 10%
BTC + ETH: ≈ 71%
Top 30: ≈ 87%
All other altcoins: ≈ 2.8%

This is the lowest "altcoin residual value ratio" in history.
Even lower than:
2018 ICO liquidation period
2020 pandemic panic
2022 FTX aftermath.