I think more powerful mini consoles like Sony Playstation TV, Razer Forge and Madcatz Mojo are unpopular because they cost more than other mini consoles like those joystick based TV consoles which had classic games with Pac-man, Tetris, pong, etc pre-loaded in them, and Nintendo Nes Mini which cost $60 at a store, SNES Mini for $80 and they both came with many games to play out of the box.
But, if you were to buy more powerful mini consoles like the Sony Playstation TV, and Android Mini consoles like the Razer Forge, or Madcatz Mojo, you would be spending $200 or more if you also bought a lot of games, an extra controller, bigger memory card to store the games, and other accessories.
Most gamers can buy a $300 used/refurbished Gaming desktop computer which can play older classic games like Half-Life 2, Counter Strike, Doom, Quake 3, League of Legends, Dota 2, etc which can play more games than the Playstation TV, and Android gaming consoles like the Razer Forge and Madcatz Mojo.
But, if you were to buy more powerful mini consoles like the Sony Playstation TV, and Android Mini consoles like the Razer Forge, or Madcatz Mojo, you would be spending $200 or more if you also bought a lot of games, an extra controller, bigger memory card to store the games, and other accessories.
Most gamers can buy a $300 used/refurbished Gaming desktop computer which can play older classic games like Half-Life 2, Counter Strike, Doom, Quake 3, League of Legends, Dota 2, etc which can play more games than the Playstation TV, and Android gaming consoles like the Razer Forge and Madcatz Mojo.