yes. I do expect Canon to still come out ahead of the game at the end of the day. Just saying "they could have made it easier for themselves and a lot harder for their competition".
I agree that Canon will have to come up with one or more higher level cameras with the RF mount, but I don't think they needed to roll one out in the first announcement. The R and Z systems are out there now, and people may take a while making up their minds about what they want to see at the higher price levels in the mirrorless systems. It will be interesting how the Z7 sells. The Z7's main competition seems to be the Sony alphas, the D850--and the Z6.