Reading 31:- The five competitive forces that shape strategy (Wiley Qbank)

Question 14:-

Can some one explain how Comment 1 is correct?

Isnt it supposed to be only 2 factors that affect profitability positively?

How does the expected retaliation of Quoscomm to Altcomm’s entry to the market lead to a positive profitability impact on Altcomm?

They say the reason is due to low threat of entrants but in the case study it is mentioned that Quoscomm has historically challenged companies in the past.