Because none of it happened. This was simply a method by which they could claim Trump was corrupt and in bed with foreigners. A complete Fiction made by British intelligence and America’s intelligence agencies conducting their normal treasonous activities.
John Podesta personally gave Russian Intelligence access to the DNC emails!
Look at Item 21a of the indictment: https://www.justice.gov/file/1080281/download
For example, on or about March 19, 2016 LUKASHEV and his co-conspirators created and sent a spearphishing email to the chariman of the Clinton Campaign. LUKASHEV used the account “john356gh” at an online service that abbreviated lengthy website addresses (referred t0 as a “URL shortening service). LUKASHEV used the account to mask a link contained in the spearphishing email, which directed the recipient to a GRU-created website. LUKASHEV altered the appearance of the sender email address in order to make it look like the email was a security notification from Google ( a technique known as spoofing), instructing the user to change his password by clicking the embedded link. Those instructions were followed. On or about March 21, 2016, LUKASHEV, YERMAKOV, and their co-conspirators stole the contents of the chairman’s email account, which consisted of over 50,000 emails.