As we here on FR make abundantly clear whenever some star shoots off their leftist mouth, such stances cost money, and ultimately, earning money (what is called "asses in seats") is the whole point.
Currently, a major motion picture can cost $200 million to make and market. If it does NOT earn back that money in its first month, it will be considered a failure. Such a loss can easily bankrupt a studio. Therefore, driving away ANY potential customers is insane. You drive away the least number by not taking divisive stances.
As far as Miss America goes, that's a bit different but still, the pageant is in business to make money. That's why they told her to muzzle some of her more controversial stances. Their image is not one they want to associate with argument and rancor. Note, she's already been accused of hipocrisy and being "holier than thou".