Let's pretend the guy that spent 10k BTC on a pizza in 2010 did not receive his pizza back in the day (basically got scammed). He shrugged it off as it was only ~20$.
He forgets about it, and notice now that a single bitcoin is valued at around 60k!
Would he be able to sue now 11 years later to get his 10k BTC back, or could he only hope to get back 20$ ?