TSMC doesn't really write chip design software. Maybe they do at some small level but that's not their bread and butter. TSMC provides IP engineers need to desi

TSMC doesn't really write chip design software. Maybe they do at some small level but that's not their bread and butter. TSMC provides IP engineers need to design chips to be built by TSMC. That IP is used by CAD tools from major players like Cadence, Synopsys and Mentor (now Siemens, I guess). TSMC's advantage is their superior chip fabrication technology and ability to scale.