Nothing you say after this sentence debunks anything I said and everything up until this point agrees with it.
SO I am not sure what you're issue is, SFV had a bad launch and took price cuts and tons of updated to eventually reach the sales it got after years of noit meeting Capcoms own expectations. There's no controversy here. It beating SF3 vanilla in sales was due to all this plus breaking there multiple version promise and giving away the game for free in some cases, I doubt Capcom mad even half as much money on SFV as IV even with the sales, if that's the spin you're going to go with,
You said they broke a promise, and I explained that it's wrong. They never broke that promise because what they said was that you wouldn't need to buy a 2nd disc/another SFV game because you wouldn't be left behind because they'd give you these new game modes, gameplay rebalances and so on would be free for all SFV players. And they didn't break this promise. If you, like me, bought SFV vanilla the game gets updated for free to SFVCE adding all the game modes, game features and gameplay rebalances for free. SFVAE and SFVCE are the same game than SFV, just that if you buy that SKU instead of the vanilla one, they get bundled with DLC.
Regarding their sales expectations for the first fiscal year yes, they didn't reach it for the reasons both of us mentioned. But due to the post launch improvements they did such a comeback thanks to SFVAE relaunch almost 2 years after SFV vanilla and eSports that it was the cover story in their fiscal year report for the year they released their biggest selling game ever (MHW), and put eSports (this for Capcom basically means SF) as one of their main long term priorities with a decades long plan, as mentioned multiple times by them, even by the CEO.
In games as service lke Street Fighter V, the post launch content keeps being added as long as the game keeps generating good enough revenue through game and dlc/IAP sales. On its 5th year the game keeps adding and announcing more content, longer than they initially planned because of good performance as they said when announcing season 5. Games like MvCi that don't perform good enough the post launch content gets cut.
And no, they never gave the game away for free. Like basically all the GaaS they made free trials, which means you can play a portion of the game during a few days, typically a weekend or a week. If you want to continue playing for it after that period you must buy the game. Or if you want to access to the full content of the game during the free trial period, you must buy the game. The players who play the free trial but not buy the game aren't included in the game units sold metric, because it's basically a time limited demo.
SFV still have at least more than a year of upcoming content, its appeareance in the Tokyo Olympic Games with an IOC official tournament (SFV, not Smash/MK11/Tekken 7/etc), and who knows if a port/next-gen patch for PS5 or maybe even if may event next gen consoles. SFV is still alive, being one of the best selling Capcom games in the recent quarters even if it's very old. Who knows how many will sell until the end of its lifetime, it's too soon to compare it to the SFIV series. Until now SFV has been in a single console, SFIV was in 5. Regarding DLC revenue, SFV focused way more on it, if they keep adding more after 5 years it's because it's selling very well. It's very likely that SFV end generating more revenue than the SFIV series even if doesn't end ported to non-PS consoles.
Last month it was in PS Plus, which means more revenue generated for the game with every download, more DLC revenue directly and extra visibility and word-of-mouth for additional sales (for people who came late to PS Plus, friends of PS Plus users, etc). In a couple of weeks they will publish their quarter results so we'll see SFV up there again as one of the best selling Capcom games of the quarter as frequently happened the last couple of years or so.