An issue I always have with early retirement is whether it is morally acceptable. When retiring early from a skilled profession you are depriving society of a big contribution you could have given, that was also expected and invested in by society.
Utilising a power dynamic by having more money and knowledge to capitalise on other people exacerbates this issue.
How are you dealing with this? Are you of the mindset that you do not owe anything to society? That it is completely fair, as you earned that money and there is a perfect market that trades all aspects in a meritocratic fashion (e.g., delayed consumption should be gratified this hard)? Or that you were not just lucky to have the talents to earn so much money?
If you are not paying for Sync you are getting ads. So you are still paying (attention, data, you are the product).
Additionally proprietary software has some long term disadvantages that are not visible at first. This is why one needs to always inform people about it as they do not understand these disadvantages.
The biggest issue is that the owners of the proprietary code can change its course whenever they like it. See for example the Reddit Apollo Dev who would have sold out the community for 10 million dollars:
See his own published audio and the discussion on HN:
https://christianselig.com/apollo-end/reddit-third-call-may-31-end.m4a
https://news.ycombinator.com/item?id=36245906