I was at a pirates game earlier this week. They are a customer of ours so we visited and got to sit in one of their boxes.
This subject came up as we were chatting with one of their execs and he said all the teams will be extending in the very near future. He said one reason the Sox did it so quickly was the geometry of their stadiums made rigging the nets pretty straight forward. Many of the stadiums backstops and areas does the lines aren’t straight so hanging the netting is an engineering challenge. He showed us some of it and PNC when we did a stadium tour and it’s pretty complex to hand and tighten the netting.
He was very clear they would figure it out in the off-season because the last they want is a kid to get killed or seriously injured.
He also said it’s not about fans paying attention. With balls coming off the bat at 115mph people can’t react.