Personally I don't bother with the absolute amount of profit my corporation makes. It varies with inflation setting, number of cities, local competent, etc. I've done countless games to dominate every single product everywhere, it's actually not that "FUN" when there's nothing else left to do. I usually come up with experimental settings and personal rules to let things more interesting and somewhat "realistic". A lot of time I even deliberately left other AIs to survive within their own "specialty market", and observe how they survive and do business. I enjoy watching them happily doing their own businesses parallel with mine. I'll even help a weaker one against a bigger one and see how they deal with AI-to-AI competition. I must say AIs are suicidal and very single minded by human standard, and usually do things the hard way. However from time to time AI can still surprise you.
One of my personal experience is, one AI had a very high tendency to buy back its own stock, and originally has a tech focus strategy, so it quickly buy back all it's stock and own 100% of it. After it researched a bunch of techs and trade all kinds of tech over decades, it suddenly changed its focus to diversity strategy, and started manufacturing products and boomed like crazy. One by one took away most market I left for other weak AIs. It became such a monster, it almost reached 1/3 of the total market (I controlled over half, and the rest is shared by all other poor weak AIs).
It bothered me so much, I spent more than a hundred years to take it down, using all the tactics and strategies I know. And it's really really hard. I used tech jump strategies, like 3 R&D centers 9-units connected 10 years project with the same product, several years finishing date apart to deal with it's tech lead product, maintaining product competitive and tech jump at the same time. I used warehouse hijack tactic to cut off it's upstream supply and cut down it's market profit (in the cost of mine). I used freebie products with $0.01 price to nuke its most profitable products. I used warehouse wholesalers tactics to trick other weak AIs to join my fight and sell my products with all our combined retail stores numbers against it. I bought up all possible media firms and spam new ones so it has to put most advertisement spending through my media. And finally I was able to turn it's profit into negative and exhaust its cash, and it had to issue new stock, so I can buy its stock and control 75% of it. It's a real tough fight, but a lot of fun.
The most funny thing in the end, is that once I was able to buy it out, I have to help it grew back up again and sustain itself, otherwise there is no point controlling a doomed corporation. I had to trace back what I have done, and slowly gave back selective area I intended for it. It's one thing to fight a war, and another to rebuild, especially when it's a former enemy. It didn't even have the backbone to maintain monopoly in empty market I left out for it anymore (it closed down a lot of firms at the end of our fight to gain some capital), and other weaker AIs quickly filled them in.
The most regrettable thing is that another weak AI also owned 100% of its stock, but wasn't "lucky" enough to be a threat (since it only manufactured one class of products in the competition area), became collateral damage caught in our crossfire, and went bankrupt. I was sad not able to save it. I think we need reverse strategies not to defeat AIs, but help them without direct capital inject through issuing stock to parent company. It's a lot harder than you think. Even buying AI's products to sell sometimes doesn't help, when it lowers the price at suicidal level. I would like an flag or a signal to AI that it would understand I come in peace, and baring good will (for now
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