I don't think you have to move the grass in and out. These modern venues all have windows which allow more than enough light in for grass to grow. Obviously it's just about money with most of these owners. Grass is way more expensive to maintain.. and in a multi-use venue you have to be able to either remove it or protect it when holding monster truck rallies and the like. I like the game better on grass.. But anybody who has watched one of those late season slopfests on grass knows there aint no 100% solution.
The raiders move it in and out because it’s a multi use stadium
Much like ATT, the have everything from concerts to motocross races, monster trucks and such. Some of which you couldn’t do on grass
Had to make money off a stadium if you don’t have something going on there all year
The stadiums of yesterday sat empty a lot but a stadium today is very expensive
Sofi is the most expensive but it’s 3-4 billion to build in some markets
You have to fill those seats more than 10 or so days a year and you need the versatility of a multi use stadium which make permanent grass tough
Some stadium don’t have translucent roofs, some are very cold during a big part of the season which is tough on grass
