Let's continue by saying that not the customer was abandoned but the product appears to.
Following Thomas's or the product's web page, what else would you expect anyone to think?
Of course we buy products and get products 'as they are'.
But then, if you keep it this hard way... why are all those customer-care, company-support, update-info, distributor-whatever-forums available?
I'll tell you why.
Forums are essential for customers and makers for cummunication and information. Because not only the usability of the core-product for the customer is essential.
At least in the same extend updates and information about the software are important, though there is no 'right to get them'.
But also all this is very important for software makers, distributors, and so on to keep close contact to their customers, to know about their thoughts, to 'feel the market-heart beat'.
All this isn't new to us. Nowadays it is part of electronic business. I'm pretty sure you'll agree to this. At least aerosoft offers this forum :-)
Keeping this in mind, what would you make us write if we (customers) find a makers homepage unchanged, uncommented and more or less 'statical' for now three years?
I think the wording 'abandoned product' meets it by 100%.
We need each other; sellers and buyers. Nobody claimed an 'update guarantee'.
But a deal is not only 1ea. software for XX money. We and you know this better. Don't try to tell us it is, please.
I'd bet no one can show a company which survived this strategy more than a few years.
Therefor let's end by suggesting you to think over your first sentences.