Be aware that allowing everybody to continue following their preferences will result in the same proliferation that you see with text editors, email clients, an

Be aware that allowing everybody to continue following their preferences will result in the same proliferation that you see with text editors, email clients, and programming languages. Based on having only 4 different systems, I might predict that your company size is ~100-200 people (though that's a napkin estimate based on a single integer). There are at least 10 systems available, and certainly many more that are only accessible to technical people.