I’m sure Airbus are looking carefully at the prices that the MAX is being sold at. Anti dumping rules may come into play if Boeing are discounting too much in order to clear the logjam and get some cash flow moving.
This is the end for the B737, there won’t be a future generation of the type. Getting the MAX back in the air buys time for Boeing to develop a clean sheet replacement, something which should have been done back in the 1990s.
A fantastic deal for Ryanair, a brand new fleet of efficient aircraft with low fuel consumption and high dispatch reliability at a massive discount. Their pax don’t know or care as long as the fare is cheap. A guaranteed buy back and substantial discount may have been offered for when the replacement aircraft becomes available in 5 - 8 years time.