I think you're completely correct and I do believe Bitpetite/Bitconnect etc will all exit eventually.

I've actually wrote an article on why I'm still investing regardless of the very obvious risk, and why you may still want to consider it:

https://steemit.com/cryptocurrency/@lemmithree/why-i-m-investing-in-bitpetite-regardless-of-obvious-risk

Long story short; if you exercise caution you can get in and out with a good chunk of money then leave forever with your profit, as I have done.

All the best and good luck with any and all future investments!