Not participating in facebook puts you on a social disadvantage (during an interview for a job, the question of a lack of facebook account came up and the interviewer noted negatively that they weren't able to confirm my CV that way, I didn't take that job)
Facebook as a monopoly is bad in the same way that Microsoft as a monopoly was/is bad because while you can still work on your computer using Linux, you'll have a hard time opening Word documents from the latest MS Office release that contain non-trivial formatting.
You can probably still use the document but you are disadvantaged.
It's a quasi-monopoly. They don't operate a resource necessary for survival, Microsoft never did either, but not participating in their quasi-monopoly puts you at a disadvantage.
Facebook as a monopoly is bad in the same way that Microsoft as a monopoly was/is bad because while you can still work on your computer using Linux, you'll have a hard time opening Word documents from the latest MS Office release that contain non-trivial formatting.
You can probably still use the document but you are disadvantaged.
It's a quasi-monopoly. They don't operate a resource necessary for survival, Microsoft never did either, but not participating in their quasi-monopoly puts you at a disadvantage.