What does "fighting" mean in this context? Money will not change anything if the lobbyists on the side of the advertising behemoths continue to have the ear of lawmakers.
Facebook and Alphabet are two of the world's largest corporations; they, and the giant cottage industry of analytics and ad arbitrage companies are entirely dependent on maintaining this status quo.
Even Apple, a company not reliant on ads, succumbed to advertiser pressure and held off on introducing changes that would limit their ability to collect tracking data.