Thank you for the information and your question, however, I am not entirely clear on what you mean by "next step." If you are asking if you have a right to work remotely because other employees do, then the answer would be no, unless you can prove that the only reason you are being denied the opportunity is because of your gender, race, national origin, age (over 40), pregnancy/childbirth, religion, disability, or military service. Or, because you have used FMLA.
In other words, an employer never has to be even handed in their policies unless they are engaged in unlawful discrimination. If you do believe that you are being denied the opportunity because of one of the listed reasons I mentioned, then you would need to file a formal discrimination complaint through your HR/EO department at work. If they do not resolve the information in your favor, you can then file a complaint with the EEOC and contact a local employment law attorney to discuss your next step, which could be to file suit.
Please feel free to ask for clarification if needed. If none is needed, then if you could take a moment to leave a positive rating in the box above, I will receive credit for assisting you today. Thank you