Article: Antitrust: Judge Rules Google is a Monopolist in US Antitrust Case

Question:

Given the profit$-$maximizing price and quantity for Google:

Marginal Cost $(MC)=20$

Marginal Revenue $($MR$)=20$ at Quantity $=100$

Price $=50$ at Quantity $=100$

Total Fixed Costs $($TFC$)=500$

Compute: Total Revenue $($TR$)$; Total Cost $($TC$)$; Profit

Assess and explain whether breaking up Google into smaller entities would enhance market competition, and how this could risk a reduction of economies of scale and innovation.