This is common misconception. The larger there is a cost of sub-optimal performance. If you spend $1000/month on your infrastructure, halving infrastructure c

This is common misconception. The larger there is a cost of sub-optimal performance. If you spend $1000/month on your infrastructure, halving infrastructure cost will save you $500/month which can't justify a lot of investments. Now if it is $100M/month saving $50M a month is worth a lot.... this is why Facebook for example has created many custom built highly optimized systems like RocksDB