Cute sentiment but I do not think you understand the type of resources required to build this type of software where individuals can generate and hold the private keys of their own wealth. Funding the building out of the core infrastructure the entire community uses has not been cheap and many people have made significant sacrifices of both time and money to get Bitcoin where it is today.
Of course businesses only survive by attracting paying customers, so the need of Armory to do so is clear.
I'm not sure you appreciate the way that Armory's value to potential customers changes as a result of being closed source.
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Personally, I will never use a cold storage wallet that I don't compile myself from publicly-available source. A closed-source Bitcoin wallet is a spearphisher's wet dream.
You can easily use bitcoin core to create cold storage wallets. If you aren't using the wallets for anything than creating a cold storage wallet there are easier and better ways than Armory. The benefit of armory is if you spend from your air gapped cold storage you don't have to go through the entire process of creating a new cold storage wallet.