You can't go outside where you live but you can afford expensive electronic exercise machines? Sounds like you need to change your priorities.

What world do you live in where you cannot just "go outside" and be there for a window of time.

In what world are you unable to do the above, but perfectly able to have this solved via electronic workout devices.

A non-ableist one, apparently. A transplant patient who is on anti-rejection meds, where they need to protect themselves from a pandemic-level infection that their body refuses to build antibodies for despite numerous vaccination attempts. A person suffering from agoraphobia, where the fear of being outside and even observed is a psychological road block to doing literally anything. Two of many possible reasons for things like this to be a huge help.

Do they need an electronic workout device? Nah, but if you're legitimately helping someone to achieve motivation or be safer in taking care of themselves, then the product has value.

The world where my 4 year old can't quite keep up. He's done = I'm done.

Balance bike or bike for kid and you can run next.