What an absolutely stupid idea. Do people even do math or logic anymore?
Any tax levied on a business ends up adding to the cost of the goods it produces, not harming shareholders. Most businesses will even add their normal profit margin to the cost of the tax. It will be consumers who end up paying a tax that almost all modern economies have no use for or cannot transfer to spending to help anyone.
If the goal is actually to narrow the income gap (although I think the global elite are just messing with us now with junk econ like this) taxation must be very progressively applied to shareholders after profits are distributed. Otherwise we are just saying we want essential goods to cost 15-20% more for everyone with no purpose served.