Letting Mac users,of my app, share compute power. Feasible or problematic?

I'm exploring the idea of letting users of my Mac app contribute their compute power to help process data for other users. This could be useful for Al workloads, decentralized processing, reducing cloud costs. Users could opt-in, control resource usage, and possibly get incentives for contributing. However, l'm aware of challenges like privacy concerns, security risks, and potential performance issues. How would you approach these problems? Would you trust an app to do this? Any thoughts on how to make it viable?