I think Australia should be investing heavily in nuclear. The cost doesn't make sense for the private sector to bear, but the govt can afford it as long as it doesn't take away from renewable investment like the libs are proposing here. Future debt is easier to solve than carbon emissions.
We need large scale base load power generation to fill in the gap that electrification of everything will bring. Electrical demand will increase as we replace fossil fuel for heating, cars and transport, etc...
I've used backblaze b2 for almost 8 years now and it just works. I've never had any data lost by them in that time.
I just recently switched over to Storj.io as it a bit cheaper at only $4/TB as compared to B2 at $6/TB. Both are S3 compatible and work with just about every backup software out there. I have used Borg, Kopia and now Restic to do backups of important data. All 3 tools deduplicate all your data and reduces the amount of storage used. They also do encryption client side and are open source. They also have a built-in verification mechanism that checks the data is intact.