I hope Google encourages spin-offs to be launched from these closing services. Haven't used Google Compare as it's not available in my region, but it seems like a solid concept.
Since Google mostly partnered on this you can get a similar comparison quoting experience from their partner Coverhound who is very much still in business.
Coverhound by the way has investors from American Family and ACE/Chubb and more carrier partnerships than Google had. Coverhound also was expanding beyond Auto in to commercial insurance. So I'd expect them to stick around a bit longer.
https://coverhound.com/