Sony considered, made market research, asked developers, made internal test prototype, etc. And found out it was too problematic (well anybody with a bit of sense knew it was a issue for the generation).
But if you look just what they released the Vita TV was a failure… it was underpowered and not all games could run on it.
"has not had great results in the past"
- it would be funny if he was thinking about Vita TV there. But Vita TV was never pitched as an affordable alternative to PS4.