This project says it's open source, but its license doesn't follow the open source definition because of the commercial restriction. Personally I think removing that restriction would also make Project-4o better because it would become truly open source, would no longer affect further finetunes/quantizations of Project-4o (for example, if Person 1 finetunes Project-4o, and Person 2 wants to use it commercially, should they ask Person 1 or the Project-4o contributors?), incompatibility (many resources which are useful use licenses that are incompatible with the commercial restriction), and because more people will see Project-4o and contribute to it without that restriction.
This project says it's open source, but its license doesn't follow the open source definition because of the commercial restriction. Personally I think removing that restriction would also make Project-4o better because it would become truly open source, would no longer affect further finetunes/quantizations of Project-4o (for example, if Person 1 finetunes Project-4o, and Person 2 wants to use it commercially, should they ask Person 1 or the Project-4o contributors?), incompatibility (many resources which are useful use licenses that are incompatible with the commercial restriction), and because more people will see Project-4o and contribute to it without that restriction.