When they have a credible story to tell the market?
JBI's rehash of pyrolysis with a twist of magic catalyst is only fodder for pennystock aficionados, and compensated awareness purveyors.
The SEC urges caution. The USPTO found nothing novel about Bordynuik's claims. I don't see any significant customers for JBI's product. I see staggering losses, a crushed share price, and some POed PIPE investors.
Your examples by comparison are baloney.
Since when do alternative energy stocks require positive earnings first before they go up?