One of the most important factors in any IT purchase is the knowledge that the product is future-proofed. That your purchase will continue to be supported in years to come, is reliable, can cope with upgrades and is interoperable with your other systems, are all essential factors for any IT strategist who has an impatient finance director. You also need to know you're not wasting your money from the outset.
Technology has to be useful and relevant.
But we live in a world that has produced some real clangers. The US once spent millions of dollars on a special pen so astronauts could write in space. They then asked the Russians what they used - the Russians used pencils. Unfortunately, the same principle applies to technology for business. Just because something can be done, doesn't mean it's useful.