Hi Nosila S.,
I think it would be possible to replicate the pressure relief and to replicate the alignment but to replicate the feel which is subjective and something else completely I don’t think so no or at least the only way to know would be based on your own personal testing.
Innersprings are just a support layer and there are many different types and any of them can use any material above the springs in the comfort layers just like any other support component so you could have an innerspring/polyfoam mattress, an innerspring/memory foam mattress, an innerspring/latex mattress, and innerspring microcoil mattress, or an innerspring/natural fiber mattress like the one you are mentioning. There is no material or component that is in and of itself good for a particular situation though because almost any material or combination can be layered in a way that provides the pressure relief and support that someone needs. Feel though is different and each material has a very different feel that some will prefer and others not so much. There is no magic in any specific component in terms of its ability to deal with a particular set of circumstances and you will find that there are always as many who say a particular combination is “great” as there are people who say it “doesn’t work at all for me”. The choice of material is a preference in other words and it’s the design of the materials and the mattress that makes it suitable for different people. Every combination of materials has a wide range of different designs available that would be suitable for some and not for others.
VI Spring is a great mattress and is among the best of the “super brands” but when you are looking at a mattress like this you are looking at a work or art as much as you are looking at a mattress (see post #2 here).
There are certainly lower cost versions of innerspring and natural fiber mattresses available and you can see a list of some of these in post #4 here but they may not be available in all areas and they may not feel the same to you as a VI Springs because “feel” is subjective and you would need to test them in person to see how they compare for you.
It may be well worth calling the different manufacturers listed though to see if any of them have retailers in your area where you could test them.
IMO and in a word … no. While the materials may last that long without breaking down (natural fibers are very durable) … the comfort and support won’t because fibers will compress over time and change the way they feel. Very durable … yes. Rest of your life durable … I don’t think so.
Phoenix