33K followers, 11K leads, $0 ad spend: the solo founder who turned LinkedIn comments into a SaaS moat

A French indie operator posted once a week on LinkedIn for six months, grew from zero to 33,003 followers, captured 10,965 leads, and now pulls 5–10 warm inbound leads every week spending 35 minutes total. No cold outreach. No ads. He analyzed 170 high-comment posts, reverse-engineered the hook formula, built a one-word CTA system that averaged 310 comments per post, then automated the DM follow-up into a SaaS that pays him $800/month while solving his own bottleneck.