Netflix:
Has 9400 employees, only requiring vaccines for those on sets.
Google: 130,000 employees, most of whom are currently remote, no plans to return to offices until October so employees have time to get a vaccine or get an exemption. A union represents roughly 700 employees.
Disney: 240,000 employees, including 100,000 employees in the theme parks division. Unions represent 43,000 employees.
Not saying that Disney couldn't mandate a vaccine, but they're going to have a much tougher time of getting everyone vaccinated than Google and Netflix.