A lot of markets are like this. Its a universal issue with capitalism and particularly with consumable goods. If the agriculture industry was entirely owned by the state, that would be possible. But small scale farmers do not have the ability to start up a cheese operation off the cuff, so they pour out excess milk so spoilage doesn't spread.

You'll note that there is a trend towards monopolies in capitalism. Monopolies do have some flexibility when it comes to perishable goods like this, like redirecting things to canning, because they own the farm and the factories. But sometimes even then, a monopoly isn't big enough to reduce wastage. Thats where socialism is necessary in order to reduce wastage. But you can't just hit the socialism button, its far more complex than that.

One benefit of lab grown meat is that it can be confined to a small area, which makes centralization even easier and reduce wastage and increase recycling. I do strongly believe these sorts of technologies that downsize old high land use structures are the most necessary for socialist development.