All good points, but there is actually the bigger social problem which is that tech companies are generating an increasing amount of wealth and concentrating it

All good points, but there is actually the bigger social problem which is that tech companies are generating an increasing amount of wealth and concentrating it among a smaller number of employees without the overall economy growing at the same rate. During the industrial age there was the natural consequence that large companies needed many employees. Now that tacit social contract is being up-ended and nowhere is this more visible than in San Francisco. Too many techies ignore this reality and soothe their conscience by an almost religious belief in meritocracy and that anyone can do what they do, they just need to retrain. I'm not trying to assign blame or say that we should feel guilty about our relative success, but we need to acknowledge the structural problem and think about how it can be solved before it turns into real class warfare.