There are “non commercial” licenses, so I don’t see any reason why you couldn’t do a “commercial only under these conditions” and the conditions only allow for solo developers and small teams and stuff like that. There are also people who do no-commercial-unless-you-pay-me.
The one thing you can’t do afaik is change the license retroactively. So you could change it for all future versions but the versions you released under MIT or whatever will remain under that previous license.
There are “non commercial” licenses, so I don’t see any reason why you couldn’t do a “commercial only under these conditions” and the conditions only allow for solo developers and small teams and stuff like that. There are also people who do no-commercial-unless-you-pay-me.
The one thing you can’t do afaik is change the license retroactively. So you could change it for all future versions but the versions you released under MIT or whatever will remain under that previous license.