This data-file profiles some simple details into facilities that produce sulphuric acid, out of the 1,000 such facilities globally.
This is one of the largest commodity chemical markets in the world, at around 270MTpa, used primarily in making phosphate fertilizers, but also more broadly across a vast number of different industries.
Around two-thirds of the sulphur is sourced from the oil and gas industry, for example, in refineries and natural gas production facilities. This does raise the question for how the world would source sulphuric acid in the unlikely event that oil and gas were phased out as part of the energy transition.