It's actually quite reasonably priced (for the market, which is still absurdly marked up). Mine ran me 95€ a piece, where the Luxottica equivalent would be over 200.

Yes, the prices aren't really competitive. You do get really good quality, though, especially with their "individual" lenses. Also, in the EU at least, Luxottica is less dominant. There are many smaller designers (like ic berlin for example). I don't see much price competition, though — it's all ridiculously expensive.

EssilorLuxottica has a similar company has a comparable share in US and Europe (about 40%). I can only find figures for EMEA but I’d assume that it would have a higher share in richer European countries than in poorer ones.

Which makes sense considering both companies are European.