Are there really only 2 tennis ball factories in the whole world? I can appreciate making a high-end ball at scale is a rather precise and niche process with l

Are there really only 2 tennis ball factories in the whole world? I can appreciate making a high-end ball at scale is a rather precise and niche process with limited market and little room for innovation. Is cheap logistics making it completely impossible for smaller and less premium factories to be competetive elsewhere? Does this also mean any ball you buy, whether budget or premium, is the same, produced in either of these places?