The restriction isn't that "you can't run the software as a service without offering the source." You're thinking of the AGPL, which is recognized as an open so

The restriction isn't that "you can't run the software as a service without offering the source." You're thinking of the AGPL, which is recognized as an open source license by the OSI. Redis's license has changed to the SSPL, which requires anyone who runs Redis as a service to release the source code to "all programs that you use to make the Program or modified version available as a service" under the SSPL. This makes it effectively impossible for a cloud provider to actually try to comply with the license, as it would require a massive engineering effort to write a new operating system, new device drivers, new programming language implementations, new web stack, etc all licensed under the SSPL.