Engineering salaries vary widely with geographic location, engineering field, experience, and combination with other types of compensation.
There are some people in those areas who make what seems like a lot, but what is only reasonable once cost of living is considered.
EE's and software developers do well, but tons of things are offshored now. Engineering salaries are dropping across the board, except for civil (ditch engineers) in the public sector, where wages go nowhere but up.
Engineers who are involved in start-ups are more properly treated as business people than engineers, as their primary concern is business ownership/mgmt, rather than the practice of "engineering".
Like I said, I set stuff like this up--or more properly, tear it down in the USA and rebuild it elsewhere for much cheaper. Boutique stuff still exists in the USA and for sure there is still "engineering" to be had, but a lot has left already--and a lot of the people here now are on visas, and work for much less than you would believe, especially in elec/SW.