Early Bitcoin dev misses out on $1.3B after selling too soon

"I'd be a billionaire now if I hadn't sold the 55,000 bitcoins I mined on my laptop in 2009-2010 way too early."
Source: Early Bitcoin dev misses out on $1.3B after selling too soon (https://cointelegraph.com/news/early-bitcoin-dev-misses-out-on-1-3b-after-selling-too-soon)
Would appreciate your opinion about this