does Justin haven't the funds to pump tron?
No offend to others as i'm still hodling Tron, but answer of your question is: Justin sun's doing his marketing unethical, maybe that's why tron isn't doing well. If anyone wonder how Justin's doing this , just check out
Marques Brownlee's recent video about Dogecoin ( jump into 6:00 timeframe) where he explained that Justin Sun's paying influencers like
NE-YO,
Lil Yachty,
Lindsay Lohan to tweet about TRON or it's sibling coins but i won't look like a sponsored one. So, Justin Sun has huge fund to do that and maybe, investor/community isn't satisfied with this type of marketing, IMHO. But lets see what happen and hopefully it'll make a new ATH just like others.