[fragmede]

That's a uselessly wide brush because it's all CRUD. Different companies specialize in different areas, carving out their own, highly profitable niche. Customized hardware for doing CRUD on (Apple, Juniper, Cisco), specialized software for high-performance CRUD (Oracle), selling access to systems for doing CRUD on (AWS/Azure/GCP), giving away access to custom CRUD software for free, and selling advertisement in the Read step (Facebook, Google Search), charging fees for use of custom CRUD software (AirBnB). Hell, money itself is just CRUD in various databases (bank/visa/the fed/blockchain/etc) and various companies make a killing off that (Venmo/PayPal/Square).