Why do all new characters seem to come out with Omicrons?

Just trying to think back when Omicrons first came out;  weren't they meant to be used to boost older characters into being more relevant?  Or did I, and am I, missing something?  Obviously makes money for CG, but just wondering how they then bring those older characters back into relevance, if they keep adding them to new characters.  That ultimately widens the gap doesn't it?  Again I assume it is really all about the money, since those older characters don't make them any money now.

I may be, and probably am, totally wrong, but that is what I thought the case was for Omicrons, not that they will be added to every new character.

Just curious.