For me, team TrueBlue = team Gateway : same brick code method implanted in their update, same type of communication, even genius in the development...
By cons I do not see the interest they would have to abandon GW ship while their linker is the most famous, most purchased (now) and the only one which development is assured.
True Blue has disappeared because the hackers were able to decrypt their construction method for build modified EBOOT and therefore the use of the dongle was obsolete.
The Gateway is not likely to disappear because it is the goose that lays golden eggs in addition to being the spearhead of 3DS linkers.