Necessity is mother of all invention.

 
When people find problems with existing products/technology that they are using, they think of ways to improve them. That’s how people invent. It’s the most basic rule. If you’re comfortable with what you’re using, you’ll never think of ways to improve it because you already think it’s perfect. You’ve to fill the sluggyness, the giganticness, the complex UIs first in order for you to fix them.
There are some basic parameters that you can measure this.

• Size – Size matters irrespective of how big or small the product is. People will always need smaller phones, bigger houses, bigger cars, thinner TVs etc. So as product manufacturer, you should always be driving your company towards making a product better in terms of Size.
• Strength – This is important when the product is more of a mechanical one. In gadgets etc, there is a certain expectancy above which strength becomes irrelevant. We expect our phones shouldn’t break/crack but above that they are not expected to be strong enough to break stones. On the other hand, we’ll always expect our cars to be indestructible. Even when 2 of them go head to head, we would expect them to bounce off before bending/crashing.
• Speed – This is important in terms of physical speed (cars, etc) and operating speed (phones, computer, cooling of refrigerator).
• Complexity of use – When a device/product has an interface, it has to be easy. Starting from unlocking your cars to flying jets, from opening your laptop to editing video on youtube. Everything comes down to how easy it’s to use. If it’s not easy enough for mom/dads to use, make it easier. And if possible, automate. That’s the most easiest way of doing things. For example, if the car unlocks when I reach near the door but stay locked if it’s somebody other than me. Laptops that can wake it self up right before I am about to use it and phone that are ready to take snaps the second I see something amazing are the dream products. When the technology advances, the devices should become easier to use. No mater how complex the science is behind proximity sensors, they’ll always be used to shut-off screens of touchscreen phones so that users don’t accidentally press something.
• Process of creation/production – This is the final parameter that each creator/producer should look at. It shouldn’t be a rocket science to produce anything. Keep it simple and efficient. Remember that the product being created is larger than the company being built. Products and ultimately the consumers should, no MUST, always come first.

If you master these parameters, I guarantee you’ll not fail in any business. And as a user of any product, you should always evaluate them against these parameters.