You are disallowed from building a commercial product on top of it or tweek/fix it without publishing said changes. There may be systemic reason that prevent that.
That still doesn’t prevent a company from having the option to use the code commercially. Whether they actually want to do it or not is a separate issue.
Nothing in the GPL prevents software from being used commercially… why do you claim they are unable to?
You are disallowed from building a commercial product on top of it or tweek/fix it without publishing said changes. There may be systemic reason that prevent that.
That still doesn’t prevent a company from having the option to use the code commercially. Whether they actually want to do it or not is a separate issue.