Our ro unit is disguised in my garden.
I begrudge paying the fat cat bosses at Southern Water any more than I can get away with.
If they could get away with increasing their hugely over inflated wages and passing on the cost to the customer - they would. If they could get away with polluted tap water and save money, they would.
The system as set up is based on the water companies making huge profit and being private companies, they will do the minimum to earn it.
I'm a private company also. That's business for you.