Looker Studio versus a dedicated ecommerce analytics platform is not a close call for most founders running a store above $500K in annual revenue. Looker Studio is free, connects to Google data sources easily, and looks polished in a demo. But it cannot show you contribution margin, customer LTV by cohort, blended ROAS across Meta and Google, or a 60-day revenue forecast without significant custom engineering. A purpose-built ecommerce analytics platform does all of that out of the box.