I'm thinking about starting to run my own tools instead of relying on third-party software, e.g.
* GitLab.com (free, ~$80/mo for CI) => Self-hosted GitLab
* Sentry.io (free) => Self-hosted Sentry
* Slack ($24/mo) => Mattermost
* Google Analytics (free) => Matomo
The main reason would be for GDPR, HIPAA compliance, SOC-2, and PCI certification.
I also don't think I would save any money by running these on AWS. I would probably need a few m5.xlarge instances, and it would cost about $150/mo per instance. And then I have to monitor and upgrade all of the software, debug any problems, etc.
So right now I don't have any big incentives to go down this road, but that might change once I'm ready to look into HIPAA compliance.