This doesn't mean that the other family history websites don't offer anything for Scottish researchers.
If you are researching mainly Scottish ancestry you may find yourself mostly using ScotlandsPeople, the Scottish government family history website which operates a pay-as-you-go credit system rather than a subscription system. This doesn't mean that the other family history websites don't offer anything for Scottish researchers. All four major genealogy websites have transcriptions of census data for Scotland up to 1901 and all the sites have various other datasets from newspapers to military records.