It's pretty much the same in software too. I often get requests for functionality and when I say "no, we can't do that", I get "Why not? Amazon does it".
Hrmm... Amazon has dozens of people working and supporting just that one feature. You're trying to engage me to do an entire project. On a fixed budget. With a fixed time frame. And you've changed your mind 3 times in the last 3 weeks on key points.
Of course, yes, there are amazing things you can do with software that weren't remotely feasible even just 5 years ago. But there's always a moving target - the market leaders (Apple, Google, Amazon, etc) are constantly pushing the boundaries of what's considered 'normal', and most people have 0 idea of the real cost and effort involved in having the functionality come across as polished and error free as the big boys.
Hrmm... Amazon has dozens of people working and supporting just that one feature. You're trying to engage me to do an entire project. On a fixed budget. With a fixed time frame. And you've changed your mind 3 times in the last 3 weeks on key points.
Of course, yes, there are amazing things you can do with software that weren't remotely feasible even just 5 years ago. But there's always a moving target - the market leaders (Apple, Google, Amazon, etc) are constantly pushing the boundaries of what's considered 'normal', and most people have 0 idea of the real cost and effort involved in having the functionality come across as polished and error free as the big boys.