Yes but that is speculation. No one will invest o

Yes but that is speculation. No one will invest on speculation that current vaccines don't give long term immunity. Most early studies I have read suggests they do. We may find a market in variants of COVID ... but again the jury is out on the effectiveness of mRNA vaccine on COVID variants. Most research I have read says they are still effective (other than the California strain). Again, no one is putting money down on that.