"I have proposed to myself not to comment on this subject anymore, but it is not okay to ignore what is wrong."
What is wrong or not, is not set in any universal rule. Or are you implying that your ethics are higher than others?
"No one buys a broken product or an unfinished object because then you expect it will be repaired. People buy functional products."
Of course. But not every product sold in the history of mankind has been perfect. That is why there are usually consumer rights. You find it defect from the start? Demand a refund/repair. If you don't, then that's your decision. Somehow somewhere, you as a consumer has to take some responsibilities in figuring out what your consumer rights are (in this case, regarding commercial software).
If you can prove that GIANTS deliberately sold you a defect product and broke the applicable laws for commercial software, then you should present your case. If you cant't, then you still have your consumer rights and can ask for a refund.
And then we have what you call "the decent functioning requirements". What are they? Please give us a complete list for FS19. Because others using the same products (i.e. copy of the code you talk about) can use it. They play FS19, enjoying it, sharing their experiences. Are they lying? Or is the "decent functioning requirements" in FS19 that GIANTS must adhere to, the same as what *you* think you should be able to do in the game or how *you* think should be able to play the game? Because, I also see people here posting about some serious bug. Then they get replies from others that they don't experience that bug and what one user think is a bug is in fact how the game is designed and meant to be played.
So if you think that GIANTS deliberately sold you a faulty product, then present facts about how the products should have worked. And good luck in finding consensus on how FS19 should work amongst those how use it...
"It is disappointing how we are treated. Nobody answers, no one knows if a next patch will come again, when it will come, if they moved on to FS20 or 21. Or if FS19 was only a beta/patch for FS 21. For $30."
Who are "we"? Are you representing an unknown number of others? I'm sorry you feel disappointed about FS19. I was too. But I know that I can't always get everything I want in life, so I don't play it for now. And as for your dramatic conclusions about GIANTS... They do answer some questions that are not just hostile, dramatic, demanding, ranting... But obviously they can't answer every single one. And speculating about the future is also kind of pointless if they are not sure about things. They may or may not release another patch. And if they do, they release it when they think it is ready. You just have to accept that.