We could argue that there didn't need to be change, because favoring the wealthy was already the policy: Wealth concentration was already at historic highs. Taxes were already very low, including capital gains tax (the primary source of income for the very wealthy - return on capital is the primary income of capitalists), social safety net relatively underfunded including widespread lack of health care, social and economic mobility dropping, access to higher education relied primarily on family wealth and not grades, access to housing dropping, etc. State governments brag about no income tax, which means they rely on regressive taxes to pay for the common good.

Regardless, I think the parent comment facts are wrong and there there have been massive changes benefitting the wealthy: There have been massive tax cuts for them, reduction in enforcement of financial laws (e.g., by the SEC, etc.), lagging financial regulation of private equity, destruction of consumer protection (such as the CFPB), massive changes in policy and action to benefit the fossil fuel industry including use of the US military, ... there was a big tax law change to benefit SV founders that was advocated here on HN, protectionist measures increasing prices for consumers and giving the benefits to corporations, etc.