Future access to data if subscription cancelled

Hi,

There didn't really seem to be a suitable location for this question, so I've opted for "getting started" even though it's the complete opposite.

We are considering switching to another accounting software provider. This decision is not being made lightly. As frustrated as I get with MYOB's deficencies sometimes, there are also a lot of features in MYOB which I use often that do not seem to be available in the other programs we're looking at so we may not end up changing at all. 

However, in case it is decided that what we gain by changing outweighs what we would lose, I need to work out what happens to our many years of data that currently exists in MYOB.

I understand I can take a backup and restore a copy of the file locally. However, will I still be able to open and read those files if our subscription to MYOB is cancelled? That is, if we cancelled our subscription today, would the current version of MYOB continue to work indefinitely? I understand we wouldn't get upgrades and it would quickly fall out of the "supported" versions list. But will it still work? Would we still have access to the data for reference, or in the event of an audit?

I imagine it would only work while it was installed on the same PCs. If we replaced the PCs we probably wouldn't be able to reinstall the older version of the software. Or can we just save an install file for future use?

Is the "desktop licence" referred to in this post from 2015 still an option?
https://community.myob.com/t5/AccountRight-Sales-and-purchases/Cancellation-of-MYOB-AccountRight-and-future-access-to-files/m-p/377816#M23489