WiFi software specialist Plume has popped up with a massive trojan horse of a deal – disguising ten deals in one via a reseller agreement at incumbent Japanese cableco Jupiter Communications (J:Com). In other words, Plume is about to steamroller the country’s cable WiFi market, reaching virtually every single cable subscriber in Japan, starting with J:Com’s footprint of 5.5 million subs. It will take a special vendor-driven WiFi initiative from service provider giants like PCCW, Softbank, Rakuten and NTT Docomo to dethrone Plume’s WiFi dominance in Japan in terms of subscriber numbers, while the deal also begs the question of why homegrown WiFi mesh software and management vendors in Japan could not cut the mustard? Plume, which prefers to be…