DO charges $0.10/GB per month for block storage, the same as AWS Lightsail charges for block storage. AWS also has Lightsail Containers which are far cheaper than EKS and is their DO/Linode/etc equivalent.
Lightsail also offers load balancers for $18/mo compared to DO's $10, $30, or $60 per month.
DO $15/mo managed DB 1G 1vCPU 10G SSD
AWS $15/mo managed DB 1G 1vCPU 40G SSD
I'm really not seeing how "pretty much everything else isn't" with respect to their offerings.