Microsoft CEO Satya NadellaGeorge Chan/Getty ImagesSatya Nadella said firms should create AI models tailored to their unique business needs.Microsoft is embracing a multi-model AI strategy, hosting diverse models on its Azure AI Foundry.Nadella warns of economic risks if AI models are concentrated in the hands of a few companies.If you own a company, Satya Nadella thinks you should build your own AI.In an interview that went live Friday, Microso…