I understand your disappointment there, however, I just wanted to clarify a few points there..
In terms of 'unprofessionally'. We have evaluated this internally for quite a while now. Once it was decided, we release our intentions to a focus group of people to discuss. Our intentions were released over a month ago to providers, then 3 weeks ago to let members know. We have done this, and people know it will be being removed in another months time. So there has indeed been plenty of time given on the removal.
With renewals, at some point, we have to stop accepting them. After all, they will not be able to download on our site.
With setting up your own marketplace, and working out how users can download the new file, I'm not sure what you mean here. If you are unsure on how to set up the Invision platform for you to sell files, I'm sure someone can point you in the right direction. However, as a developer on the platform, I would question whether or not you are unsure how to do this.
I completely understand your opinion there. But while I understand the opinion, it doesn't necessarily mean I agree with them. We have worked to try and provide a way for providers to know who has purchased a file on here by way of keys. Outside of this, the intention is we are removing the marketplace and the intention is that we are no longer involved in that process.
We have run the marketplace at a considerable cost to the company for quite a while. And while I understand your disappointment, this was a free service, provided at a cost to us as a company, for what is now very much the minority of customers.