it’s not so much about money - all three have essentially unlimited financial backing by their respective governments - but money isn’t everything, customer preference is really important.
Of the three, Abu Dhabi (Etihad) is by far the richest, yet their airline has struggled in recent times with a big decline in Australian services. EK has lot of market share to QR - and all will likely lose some to Riyadh air. Asian/European/Australian carriers will gain some out of this crisis. Money isn’t everything.