I did an early exercise (83b election) when I started at a startup a few years ago, paid about $30k to exercise all my options, granting me about 0.3% ownership

I did an early exercise (83b election) when I started at a startup a few years ago, paid about $30k to exercise all my options, granting me about 0.3% ownership. Five years later, AWS made our product obsolete, and company was acqui-hired, all regular share holders were wiped out, so I lost my $30k (and worked for five years at well below market). Oops.