I analyzed market and see great not filled demand on various data queries that
may be fetched from the web.
There are specific software that will mine that data on constant basis.
Although data size may vary up to terabytes, cloud hosting will be required.

Some 10k investment will be required from start on hosting and hiring few people
to maintain server.
If interested in partnership PM me for more details. First sale may be done
a week after project start.