plenty of talent, and for stability and performance all that talent spends millions of dollars on top of the line proven solutions. Applications rely on live migrations for load balancing a farm, and it happens automatically in the background around the clock to rebalance farms. Hardware maintenance is another use case. So is a bucket of water. So is change control - I want to load new HBA firmware? I'll evacuate the ESX to somewhere else first.

no one contemplates blockchain, but for someone CIO level, gartner quadrants present a quick high-level summary of where the industry is going. and $100mil+ for hardware is completely normal to run things that process billions of dollars. The US treasury department is a great example. Mastercard is another.