I don't think I suggested unions are for blue-collar jobs. Amazon workers -- including SWEs -- absolutely should unionize. Amazon pays SWEs well, but doesn't treat them well. Conversely, there are plenty of blue collar places which do treat employees well, even without unions.
Size, likewise, isn't it. Historically, IBM, HP, and other big companies in the sixties treated employees well. Similar companies still exist today.
It's all about the relationship between employer and employee. The guideline here shouldn't be size, income, or much of anything else except for having a "track record of not treating employees well." If employees would be treated better with a union, they should unionize. If not, they shouldn't.
Size, likewise, isn't it. Historically, IBM, HP, and other big companies in the sixties treated employees well. Similar companies still exist today.
It's all about the relationship between employer and employee. The guideline here shouldn't be size, income, or much of anything else except for having a "track record of not treating employees well." If employees would be treated better with a union, they should unionize. If not, they shouldn't.