I don't have a problem with gentrification, but I do think it's tone-deaf (at best), and maybe counter-productive (at worst) to ferry rich people into low-income neighborhoods via fancy white buses on a daily basis. Turning Oakland into a bedroom community for silicon valley does nothing for the people who have lived in Oakland for decades -- they're raising rents far more than they're building low-income housing with the taxes on their rent checks.
If the tech companies want to encourage their employees to live in Oakland, they should open offices in Oakland, pay their taxes in Oakland, and otherwise encourage people to live, work and play in Oakland. Bussing folks out of town in the morning and into town at night is the worst possible outcome for everyone but the people on the bus.