> how much and what type of punishment and penalty should be levied if laws are broken?

Depends on the impact of the crime the person was convicted of and how likely they are to do it again.

> how far should punishment and penalty go?

For companies who knowingly solicit or publish fake/compensated reviews: disgorgement of profits and refunds without conditions to everyone who asks. Repeated violations come with escalating fines that are a percentage of revenue (not profits) plus bans on company officers holding the position of officer of a publicly traded company for a number of years.