The storage options are available so I really don't understand what the issue is. If people want cheap 512GB/1TB/2TB options, then forget about it as it's not happening any time soon.
If people want alternatives, then they can invest in a USB 3.0 drive, a NAS or make use of cloud storage solutions.
There is cheaper alternatives.... Apple just charges an absurd premium for their upgrade and also makes it impossible as of now to buy any from a third party from a reputable source.
USB drives aren't as fast and is a HDD. nAS is an expensive solution.