Although GCP has some distinguishing technical features like live migrations, based on my own independent availability monitoring, it hasn't been any more reliable than other cloud services including Azure and DigitalOcean. In fact, over the past year, EC2 has been much more reliable than GCE. The most common problems I've observed are network blips that may or may not get reported on the GCP status page.
https://cloudharmony.com/status-1year-for-google https://cloudharmony.com/status-1year-for-aws https://cloudharmony.com/status-1year-for-azure https://cloudharmony.com/status-1year-for-digitalocean