The real play here is vertical integration - Microsoft wants to control the whole stack so they're not dependent on Nvidia's supply chain or pricing. When one company controls chip design, manufacturing partnerships, and the software running on top, they can optimize everything to work together. That's efficiency that eventually shows up as better performance per dollar spent.
For regular people, this probably means Azure customers and Office/Copilot users get faster, cheaper AI features down the road. If Microsoft can run their AI models on cheaper, more efficient chips, those savings can translate to either lower subscription costs or better features without price hikes. It's similar to how Apple designs their own chips - they can make trade-offs nobody else would, tailored exactly to what their software needs. Right now most of the benefit stays internal to their data centers, but as deployment scales, it ripples out to actual products and services people pay for.