The media always picks up more negative news, as this creates more excitement. It is also quite possible that one of the major players in the business dictates information to the press in order to direct the opinion of people in the direction necessary for it. And perhaps, in the press, mostly bitcoin skeptics work. There is to be any of these options.
Alongside this, huge companies and governments worldwide try to influence its public by controlling the information that media feeds their market on a daily basis. These media companies are so constrained in protecting their business interests hence they oblige their employees to propagate/disseminate news that are at par with the growth and sustenance of their company. They zero any chances of conflict of interests when it comes to the information they are feeding the public MAINLY to ensure they remain in their status quo in terms of wealth, power and government protection. As you may have noticed, it is JUST business. It is not necessarily true, updated, and comprehensive but something they SELECT and MAGNIFY to arouse the public at large -- may it be to gain sympathy, disdain, anger, and whatnot.
As regards Bitcoin, they are against it because most of their governments are against it. As you know in the nature of their business, they have to have good tie ups with their respective governments for the good of their franchise, and to obtain and maintain reciprocal concessions.
