And hardware units have no real consistency, not only between units but generally over time as they degrade. And yes, there are valid economic reasons why someone would produce a fifty dollar plugin that sounds for all rational reasons exactly like its $5000 dollar hardware counterpart. You might sell one thousand of the hardware units all the while dealing with manufacturing, parts sourcing, quality control and shipping costs or 50,000 software units that are perfectly consistent, do not degrade over time and can be updated with a few mouse clicks. Why on earth do you think that top level hardware companies like Manley, Empirical Labs, Lexicon, Shadow Hills, etc...have not only allowed plugin equivalents to be produced but licensed with their names?? Time has moved on...and it ain't stoppin for the likes of you or me.
PS: And never forget that a hardware unit is track limited...so to even begin to compete with plugins...you're gonna need a crap load of them.