Unity 4.x released 2012 so your company budget (you!) should have had tons of time to build up and upgrade fund. The complaint seems to be that a software company changed their model of business to increase revues. Autodesk must have also been problematic for you when they changed as well.
Software companies change rules, design and business models. This is a fact of business. You accept and work with it, find and replace it, or build it yourself. Complaining is not part of a successful business plan.

"Sell me this pen." Jordan Belfort - The wolf of Wall street.