Personally I don't think Nvidia cares too much about Evga leaving despite Evga being a well known brand. While they sold GPUs, Evga doesn't sell other products like laptops and such that Asus, MSI or Gigabyte sells. If one of those threaten to leave or if someone like Dell does, then I think Nvidia will take note. But for now, Nvidia couldn't care less imo regardless of the news cause others will happily take Evga's allocation.
PC Specs: CPU: 7800X3D || GPU: Strix 4090 || RAM: 32GB DDR5 6000 || Main SSD: WD 2TB SN850