Tanrunomad's list is still stopped at 3122 (2018) but it also includes compilation items and all the "101 BASIC Computer Games" type-ins. Mobygames has 2600 games (including compilations and a few homebrews), Gamespot has 1300, Virtualapple has 1450, Everygamegoing has 2600 (including educationals and rereleases), Macgui has 4900 (counting every single disk of any origin). Reality is probably in the 2000-3000 commercial games.
10000 games is just not realistic. That's the C64 and Spectrum order of magnitude