It was unique time and experience at its peak. People moved on largely and if something as big and addicting as Pokémon couldn’t permanently make it popular then nothing will
It will come back however in different form as the miniaturisation of VR headsets progresses and whenever it will be cool and comfortable to walk in one
Walking with eyes glued to phone gets old real quick and can fucking kill you hence no matter how good game is this formula is dead. Many Darwin awards were handed out. My friend received one and another got just a nomination