New research by the International Monetary Fund (IMF) finds that, in  periods of high uncertainty, an increase in public investment by 1% of GDP could lift real GDP growth by up to 2.7%. See IMF (2020), “Public Investment for the Recovery”, Fiscal Monitor: October 2020, Chapter 2. 4/4  BIS central bankers' speeches
Regulatory requirements for Treasury markets may need to change over time to reflect a rapidly evolving market environment. Markets will adapt to new regulation and other developments. We all have a responsibility to make sure that market and regulatory incentives appropriately encourage an evolution that will enhance market liquidity and functioning.