Even the cash rich with strong backers won't survive if .........

 Many, including the SG government are hopeful that borders will be opened and flying will be resumed. But now with the Delta variants spreading mercilessly even China which had successfully contained the initial outbreak is facing serious and numerous infection of the Delta variant. 

 Australia, Indonesia, Malaysia, Thailand, Japan, South Korean and many other countries are struggling to contain the virus. My guess is most airlines including the cash rich ones with strong government support would not last unless the virus suddenly and miraculous disappeared in the next one year.