If you look at how much these bootcamps charge (both in terms of tuition and income sharing), college is by far the cheaper option.
The trade off, in my mind, is that I didn't become a SWE in lambda. Engineering is far more broad than learning how to build a CRUD app. Since Lambda, my self appointed curriculum has been engineering fundamentals, design patters/language/etc. Knowing how to write a BST is a lot different than understanding the core concepts behind everyday algos.