It is hard to find many vendors that are willing to plainly survey the market that they serve, but this week Faultline was treated to a candid discussion with Israeli developer Castify.ai. Castify.ai’s CEO, Gal Turjeman, must be one of the only execs in the biz that is willing to call time on FAST, while others argue things are only just beginning, even though the company offers channel-building services. “We always thought that FAST was a trend, and now it has reached its peak,” said Turjeman. “At the moment, there are just too many channels, and the likes of Roku and Samsung are wanting better control of the content on their platforms.” The 20-person Castify.ai offers an app-building engine that…