I worked for a company that (among other things) organized multiday tech conferences aimed at IT managers at large companies. I was surprised to learn how low t

I worked for a company that (among other things) organized multiday tech conferences aimed at IT managers at large companies. I was surprised to learn how low the margins were. The top conferences were selling well, and had big-name sponsors at different tiers, yet one year the P&L for the group showed a profit in the low single digits. I later learned that the cost structure was high, and some of the events (particularly less established events or those with lots of competition) struggled to get signups.