There is not a problem with "tech monopolies." As new tech emerges, new platforms, new ideas, the market WILL be disrupted.

For example.

1. Google emerged in a market where there were dominate search engines, such as Alta Vista. 2. Facebook emerged in a market where MySpace was dominating. 3. Facebook is disrupting Google.

etc.

I firmly believe that the market is ripe and ready always for new ideas and tech. Are you going to be able to build a better search engine than Google? Probably not because it works well. Google will be disrupted in some other way we haven't considered, maybe AI.