A. Capital - Investors will be highly skeptical of this approach. Is there a CEO they can invest who does not give people 2 months off? If so, they’ll probably send their money that way.
B. Competition - Your competitors will be delighted to learn that your workforce is 10-15% less active than they are.
C. Recruiting - yes, many will be excited about the prospect of so much time off. But experienced employees will be skeptical of this approach and may see it as a risk. There are also people who gasp do not want to take 2 months off and enjoy working throughout the year.
Again, as leader you are free to do what you want but for every major decision you can ask yourself a simple question - does this help accelerate or slow our revenue?