Never. Even after all these years of just 1Gbps, the great majority of average users still have no need for anything more than that and most don't really even need wired networking at all anymore. Consumer laptops/pcs are geared towards average consumers and all they use their home networks for is basic internet stuff, streaming Netflix, etc.
10Gbps is for data centers, businesses, enthusiasts, etc. For average consumers, wifi is more than good enough.