Reduced cost of what? Labor? High tech companies can be as bloated as the government agencies, in terms of staff and 'bullshit jobs".
Access to more data? What data are you talking about? Consumer data? Where can you get such data for free?
The online customer experience can be as bad as the offline customer experience. You are generalizing too much.
The digital economy has it's pros, but let's not put everything digital on a pedestal. The world still needs "brick and mortar" businesses.
OP, it seems to me that your forum post is copied from somewhere. What's the point of your forum thread? Posting generic stuff, just to boost your post count?
Unfortunately they do something like that when they do not even need it and I never understood exactly why. I am not saying that they need to be like 10 people, but I do not think why they are having tens of thousands of workers, when they can cut like half of the jobs and still work without trouble at all.
I believe these workers are basically trying to make themselves look very important for the job, and that is why things are growing, and whenever their managers ask for what they need, they probably ask for more people to work for them, to both limit what they do and relax more, but also make it look like they are doing a job for more than one person, causing the numbers to increase.
There are plenty of small shops where only one person works and they do fine, because they do not have the troubles of a big company, they make more money all by themselves than what those workers make in those companies, but they take more risks and responsibility as well.