Using the above case study, along with what you find out from your further reading and research on the topic, and focusing on the literature discussed in the module, answer the question below. Within the first US congressional hearing relating to the Gamestop controversy, Robinhood’s business model was critiqued, while Warren Davidson, the Representative for Ohio, referenced the DTCC’s Project Ion, which explores the use of blockchain technology to improve the efficiency of payment and settlement functions within financial markets. Discuss whether the widespread adoption by retail brokerages such as Robinhood of a payment-for-order-flow model, along with the proliferation of dark pools, represents a fundamental restructuring of financial marketsrelative to the commission-based brokering model involving execution of orders through public exchanges. With reference to the Gamestop controversy, discuss whether a blockchain-based payment and settlement system (such as Project Ion or Project  Whitney) might affect current market practices.