I wouldn't say it was extremely simple but I managed to move our company from LastPass to Bitwarden a few months ago. There is definitely an export & import process available. I did have to do some minor CSV cleanup on what LP generated though. Additionally, I purged and repeated the import process a few times once I familiarized myself with how "Collections" and company-wide sharing works in BW. But in the end it was certainly worth it despite the effort.