The time investment is key and the OP is dead on. I can speak to trying to learn Objective-C last year on nights/weekends and not really learning the fundamentals behind I was doing, despite being able to follow along with the books I was reading and the rudimentary apps I was building. It requires a full-time commitment, which is why so many of the development "intensive" programs and workshops are time intensive (at least 8 hours per day) over anything else.
Unfortunately, the time commitment becomes prohibitive to those that have to keep running the job/consulting treadmill and can't fall back on an investment banker salary (or similar) to fund their creative ambitions for a year or more. That unfortunately is the real answer to the post's title.
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The time investment is key and the OP is dead on. I can speak to trying to learn Objective-C last year on nights/weekends and not really learning the fundamentals behind I was doing, despite being able to follow along with the books I was reading and the rudimentary apps I was building. It requires a full-time commitment, which is why so many of the development "intensive" programs and workshops are time intensive (at least 8 hours per day) over anything else.
Unfortunately, the time commitment becomes prohibitive to those that have to keep running the job/consulting treadmill and can't fall back on an investment banker salary (or similar) to fund their creative ambitions for a year or more. That unfortunately is the real answer to the post's title.