From my perspective at most there are attempts to curtail business practices untethered to any morality, which should be a net-positive for society. A completely theoretical pro-business political body would remove any and all obstacles to business: environmental regulations, labour protection, taxation, financial oversight, so on and so forth, I believe we can agree that such move would be detrimental to society at large while making businesses extremely rich, right?

The shift of framing that any attempt to curtail the bad downsides/externalities of untethered capitalism is being "anti-business" is either ignorant, misleading, or purely furthering an agenda. There's no way for capitalism to survive without oversight, its incentives are to minmax on a race to the bottom on anything possible that could give a business an edge, without rules around that the benefits of such a system are completely eroded, you create social fractures that are reflected into politics, exactly what's been happening in the USA even before Trump 1.

Perhaps this aggressive stance on being pro-business is part of the issue, and pursuing it above all else has steadily shown that society at large doesn't improve even though it fosters consumption, assets inflation, and the key economic metrics used to sell this idea.

While this stance is pursued the political power keeps getting accumulated into the hands of an elite detached from reality, uncaring for any social aspect since there's absolutely no moral incentive to think about the social contract when you can live in an ivory tower with the scales tilted to your favour, and among others like you who also don't care about any aspect that can make the life in society better for all. Improvements to society at large are coincidental, not intentional.

Capitalism is amoral, we need mechanisms that imbue some morality to it to avoid social fractures, the core issue is finding that line to balance, and which keeps shifting and needs iterative processes to rebalance when needed. The extremist version of pro-business-nothing-else-matters is clearly not the way you find a balance on anything, like any extremism it's almost by definition wrong when meeting reality.