Architects plan world's second-tallest tower in Russia
https://edition.cnn.com/style/article/kettle-collective-tower-russia-scli-intl-gbr/index.html
I guess there is less economic meaning for building the highest tower in the world. That would be why it will become the world's second tallest tower.
Amid population growth rate around the world is becoming slow, competition to build world's tallest buildings would be weaker and weaker.