One site appears in a permit under its legal owner, in a grid queue under a project code, in a manifest under a shipper abbreviation, and on its operator's own page under a brand. Subsidiaries file separately from parents. Assets are sold and keep trading under the old name for years. None of it is anyone's fault, and none of it joins on a string match.
The consequence is specific rather than cosmetic. Count the suppliers able to deliver a component without resolving them and you get four where there is one, which reads as a healthy market. Resolve them and it is a sole source. The same error runs the other way: two genuinely different sites collapsed into one record invents a capacity that neither of them holds.