I believe ETH2 is a game changer. If the POS system and sharding goes right, I can't imagine Bitcoin staying at #1. It simply would make no sense for it to be first place when ETH will have solved its scaling issues, appeased all the climate change fanatics demanding POW to burn in hell, and offering a level of decentralization POW could never do. 

ETH2 will give the politicians hating on the energy consumption nothing to complain about and sharding will provide a seamless experience for users that Lightning/Raden and Plasma do not. I honestly think that BTC chose the wrong path for scaling and as a community decided to shutdown layer 1 development too soon, and once ETH2 comes out and outperforms, I suspect they will realize this.