I understand that point of view, but I worry about the consolidation of the localization industry. Plus Sony's been big on censorship lately and I think Funimation has had controversies recently about changing scripts or something (though I haven't been paying enough attention to know how valid those complaints are).
Anime's gotten pretty big in the west and now with one company holding such a large piece of the localization pie, I don't think it's irrational to worry that Sony could now hold more sway to potentially influence the whole anime industry for the worse.
I hope it doesn't play out that way, but those are the potential negatives I can think of, whereas the only positive is what you said. So yeah, overall this news feels ominous to me.