It's extremely rare to ever want to close a company that does not make losses in phase 7. (In theory it could be a viable strategy if I can dump a corporation. In practice, I have never ever seen it.)
So perhaps have a switch (enabled by default) that let's a player auto-pass if they don't own a single company that makes losses. (May or may not include synergies for corporations.) Should the player ever feel like closing a profitable company, they could simply deselect the switch.
It's extremely rare to ever want to close a company that does not make losses in phase 7. (In theory it could be a viable strategy if I can dump a corporation. In practice, I have never ever seen it.)
So perhaps have a switch (enabled by default) that let's a player auto-pass if they don't own a single company that makes losses. (May or may not include synergies for corporations.) Should the player ever feel like closing a profitable company, they could simply deselect the switch.