I still choose WP over Wix or SquareSpace when given the option. Self hosting a bunch of WP sites on a DigitalOcean instance and mirroring them all through CloudFlare is probably the cheapest way to run high traffic read-only sites. Toss in ServerPilot and you can spin up sites about as quickly as you could doing the Wix onboarding.
My prediction is that by 2030 Wordpress will be just as popular as it is today :)