Biotech has shifted from single-technology focus to a portfolio model, where a central team manages multiple companies across technologies and diseases. This model, exemplified by BridgeBio and Roivant Sciences, leverages expertise in various areas, raising $6 billion by 2020. It offers diversified investment, simplified governance, and attracts top talent, despite risks of systemic failure and inefficiencies. The model is reshaping biotech R&D, offering alternatives to traditional funding and increasing competition for assets and talent.