I don't know why this is getting downvoted; companies in other sectors (e.g. oil) get involved in US politics regularly.
But there's little precedent for media companies to take action in US politics overtly. (IANAL, but I suspect there are legal impediments as well). Taking a political stand, or providing support for one side, might force big tech companies to resolve the ambiguity as to whether they're media companies or not.
EDIT 2: I can see I've accidentally opened a can of worms about biased coverage and editorials; but my usage of "support" was intended as overt and consistent involvement in political campaigning, generally through donations. And to my surprise, that does occur.
But there's little precedent for media companies to take action in US politics overtly. (IANAL, but I suspect there are legal impediments as well). Taking a political stand, or providing support for one side, might force big tech companies to resolve the ambiguity as to whether they're media companies or not.
EDIT: Actually maybe there is nothing stopping tech companies from choosing a side; apparently media companies do make political contribitions: https://www.opensecrets.org/news/2010/08/news-corps-million-...
EDIT 2: I can see I've accidentally opened a can of worms about biased coverage and editorials; but my usage of "support" was intended as overt and consistent involvement in political campaigning, generally through donations. And to my surprise, that does occur.