Getting NaVi at 1.4 means the site must have had Fnatic at 2.5-2.8~...to profit on 1.4 odds, you must believe that NaVi will win the game over 70% of the time. Otherwise you are losing money on the bet on average. 7/10 is NOT enough...your payout percentage is STILL only 98%!!!
It’s really easy to have hindsight? Have you watched CSGO games before? Big comebacks happen all the time and upsets aren’t that rare, any game can turn upside down in the span of a single half or less rounds.
But I get it, you want this guy to continue betting so you win more money. It’s cool, I’ve made money off problem gamblers and other losers for 12+ years now, and haven’t had a losing year yet, so I know where you are coming from. Thing is, this idiot will not learn anything from this experience. They do it again and again and there’s always another sucker right around the corner. God I love people.