It's really different story. We as a 3 friends were using my account in my house with 4 computers to play jam games this week. All of the PCs have logged on my account. We gave like 5-10 minutes for each game we played in one week with 4 people. With 4 person we managed to play roughly 650 games in 7 days. 95% of them were WebGL games. I don't see any issue here.