That is not building an alternative though. You are only destroying the current system by shooting the execs and are merely hoping that things improve.
Building an alternative would be some way of dealing with sewage without dumping it on the beach. The main problem with that are usually combined pipes for rain water and sewage. So when you have heavy rain the sewage plant can no longer deal with all the sewage, as a lot of it is just rain water. The alternative for that is something like a sponge city, where the rain water goes straight into the ground and is not blocked by asphalt or the like. Other then that lowering sewage going to the company using say compost toilets might work or maybe buying up the company and turn it into a cooperative.
Also Russia is having a massive fuel crisis, so I doubt they will be able to harvest even close to what they used to.