I think IE, ActiveX and the like were reused in tons of VB5/6 applications... at least with zillions of Spanish shareware, such as amateur games, crossword puzzles, home agendas, book databases and the like. They worked smooth enough, but in a crazy insecure way. Today it's the reverse; Chromium/Blink can do sandboxing but they bundle everything. Video and audio codecs, HTML renderers, a JS engine, a CSS engine, TTF rendering engines, 2D drawing engines, their own window and process managers... half an OS.