The negative impacts of Facebook can be attributed to Mark Zuckerberg's ego, his belief in being always right about the future, no qualms about lying and cheating to expand Facebook, and his fundamental belief that keeping people on the site longer is good.
Social media is often blamed as the cause of political polarization in modern society, however, historical evidence shows that polarization has existed long before social media.
In 2009, Mark Zuckerberg approached Steve Jobs, his mentor, to ask for advice on the direction of Facebook. At the time, Facebook was only five years old and predominantly used by Ivy League college kids.
The trend towards startup investments is going to become more intensified over time, with companies investing in startups for their potential to grow into large, peer companies. This was exemplified by Microsoft's $150 million investment in Facebook in 2007 and the US's startup investment in China during Nixon's presidency.
The use of social media can segregate individuals into like-minded echo chambers, leading to the spreading of biased information and ideas. This was exemplified by the rise of Donald Trump through social media during his campaign.
Hop around different companies, whether they are big or small, instead of sticking to one company with long term aspirations. Amazon's ability to launch something new like a convenience store is impressive.