Amazon stock could hit $300 in the next two years.Amazon (AMZN -0.64%) has been a staple in Berkshire Hathaway's portfolio since 2019. While it might have been chosen by one of Warren Buffett's investing lieutenants who oversee a portion of Berkshire's portfolio, Amazon has all the hallmarks of a solid business that would appeal to Buffett.Amazon benefits from massive scale, with $620 billion in trailing revenue. It has millions of loyal Prime members, and Amazon is also the No. 1 cloud services provider. T ...