I could see Sony and Microsoft trying to pick up on amiibo, and make their own figurines, kinda like how they tried to pick up on Wii's motion controls and made PlayStation Move, and Kinect, respectively.
I'm not sure if the reception would be as great, and it probably wouldn't be as successful.
"Just for comparison Uncharted 4 was 20x bigger than Splatoon 2. This shows the huge difference between Sony's first-party games and Nintendo's first-party games."