California's proposal to introduce European-style regulation into the BASED Act, a bill introduced by Senator Scott Wiener, could harm big tech companies like Google, Apple, Amazon, and Meta. The Act targets “self-preferencing” where digital platforms promote their services or affiliates over third-party businesses. It would restrict many common product integrations such as ranking, bundling, defaults, data use, and even some AI-driven recommendations. Instead of promoting fairness, it would make digital tools less useful by tailoring their architecture and algorithms to regulators' whims rather than user preferences. This could result in a decrease in consumer value for Amazon Prime.