There was a huge amount of commercial software written in BASIC dialects such as classic Visual Basic and ASP, Pick/BASIC, HP Business Basic, Wang 2200 Basic, DEC BASIC-PLUS, etc. Boring business software you would likely have never heard of but which was (and in some cases still is) essential to running all kinds of different businesses.
I used to work for a university and both the student administration system and the accounting system were off-the-shelf software, mostly written in VB6 and classic ASP (I believe the vendor also had some COM components written in C++, they had their own app framework, but the business logic was all VB6). At the time, we were waiting for the vendor to finish porting it to VB.NET. 20 years later, it probably still is in VB.NET.