What makes Kreuzberg attractive for startups and a Google campus is that it's central and perfectly connected infrastructurewise. Most other regions like Schöneberg, parts of Friedrichshain, Prenzlauer Berg and maybe Moabit, are all harder to reach from some other regions, even though more start-up employees live there. You can see on the maps of rental e-scooters like Coup how during the day there is a lot of activity towards Kreuzberg whereas after work the district is basically empty of their scooters. Imho kreuzberg is too dirty for most startupers. I guess they don't want to see the heroin junkies of Kotti when they do their grocery shopping.
In general I liked the sentiment of the activists against placing a Campus in Kreuzberg. Nevertheless I didn't like much of their public attitude ("bullets for google") and some arguments seemed superficial ("other Google campuses have increased rents" idk about the causality and factor here). I wouldve liked a Google campus in Schöneberg for example, just as I liked the Google campus in Madrid. In Madrid it offered a nice environment for work, some interesting talks and I didn't feel like it was in an artsy district that suddenly gentrified and turned hip. This could've added something to Berlin, but meddling with the activist scene in Kreuzberg was a poor choice.
That said, yes it would have still contributed to gentrification in a less extreme way than a true Google office.
But gentrification still happens without big dollar companies showing up. It's often a side effect of the success of the arts in the area. As the wealthy kids move in to be hip and cool, and the businesses that enjoy their money move in afterward, rents go up and creators are pushed out.
Artists often live in different districts or even different cities than their gallerists, but they tend to appreciate their patrons.
However, it should be pointed out that there are really two different programmer cultures. There the corporate one, and then there's, for lack of the better word, "open source" one. The latter is very close to artistic culture but very different from corporate culture. The people are working on what they love, they don't have much money, often they are in precarious situations. I've seen them sharing working space with artists, I've been at parties that mixed hackers and artists without any friction. I've seen self-help institutions meant to help the artists going out of their way to host some kind of strange hacking event.
