Marc Andreessen — Notable For: Co-created Mosaic web browser (1993); founded Netscape (sold to AOL for $4.2B); co-founded Andreessen Horowitz managing $90B+ in venture capital; techno-optimist AI advocate opposing safety regulation

Note: The source text confirms three major accomplishments (Mosaic, Netscape, Andreessen Horowitz) but provides no details on the specific dates, financial figures, or AI/regulation positions mentioned in the claim. The excerpt provided is limited and does not contain information about the 1993 date for Mosaic, the AOL acquisition price, the current AUM of a16z, or Andreessen's positions on AI safety regulation. These details may exist elsewhere in the Wikipedia article but are not present in the provided source text. Therefore, the claim is only partially verifiable from the given source.