Most US presidential candidates from both parities plan to increase taxes on Wall Street

The frontrunners from both Republican and Democratic speak of increasing taxes on Wall Street. I am not going to discuss about how these tax plans could affect the industry, I want to discuss a question of what makes these candidates ignore the interests of the big business groups. As I have discussed in my previous article, Internet has reduced the cost of make advertisement. Moreover, they can attend many TV debates to use their good ideas to make themselves more popular. As the public know their names already, either being invited to the TV debates or being isolated can all attract people's attention and improve their popularities. Therefore, now and in the future, the influences of big business groups on the political candidates will be weakened by the diminishing cost of advertisement and these candidates will focus more on winning support from the social majority.