A movement can be formed for various purposes, including social impact initiatives, and can choose to operate as a non-profit organization. Here are some potential benefits of forming a movement as a 501c3 or 501c4 non-profit organization:

• Tax-exempt status: Both 501c3 and 501c4 organizations are tax-exempt under the Internal Revenue Code. This means that the organization does not have to pay federal income taxes and may also be exempt from state and local taxes. This can result in significant cost savings for the organization and its members.
• Donations and fundraising: Non-profit organizations can accept tax-deductible donations from individuals and corporations. This can provide a significant source of funding for the DAO's initiatives, as donors may be more likely to contribute to a tax-exempt organization.
• Credibility and legitimacy: Operating as a non-profit organization can lend credibility and legitimacy to the DAO's activities, particularly for social impact initiatives. Being recognized as a non-profit may also help the DAO to build trust with stakeholders, including members, partners, and the broader community.
• Limited liability: A DAO that operates as a non-profit organization may benefit from limited liability protection. This means that members of the organization may not be personally liable for the organization's debts and obligations, which can help to protect their personal assets.
• Access to grants and funding opportunities: Non-profit organizations may be eligible for a range of grants and funding opportunities from government agencies, foundations, and other organizations. This can provide additional resources for the DAO's initiatives, such as research, advocacy, or community engagement.

It's important to note that forming a movement as a non-profit organization involves certain legal and regulatory requirements, and it may be necessary to consult with legal and financial experts to ensure compliance. Additionally, the benefits of forming a movement as a non-profit organization may vary depending on the specific circumstances of the organization and its initiatives.