Anything that can be industrialized invites parties to pursue economies of scale and very often reaches a situation where only a handful of players exist worldwide. Just look at computer chip manufacturing, airplane building, farm equipment, etc… This is especially true when the product being made is intended for business users who are often a small number. Little players just cannot keep up.
Ironically, if we had a solution like LN that made the need to settle to the blockchain less important, mining centralization would be less of an issue.
We're in a confusing time right now.