Fantasy computers are computer that are ‘inspired’ by real computers. Means their name sound like ZX81 > Tic80 but of course they are fast, programmable with lua and in the most of the cases have all integrated: spriteeditor, tile/background-editor, soundeffects editor and music editor. So they are really the dream of an 8bit-coder* with assembler, low memory, low graphics, no tools. 

Tapes comes from the mainframe tapes and were popularised by music too. so often people used normal tapes-drives and for a zx81-games - there were even description how you had to connect the microphone-cable to the head-phone-jack and reverse. While loadibg a zx-81 game you hear the whole time the data coming in! so meta: sound was for people and maschines.analog digital. So there was no difference between an accoustic coppler and data from the tape. 

where it successfully established itself primarily in the United Kingdom, France, Spain, and the German-speaking parts of Europe.

Consoles inspired by old consoles but 100% new. They are somehow like the dream of this days. All dev. thing in one tool (graphics, sound, tiles, coding, levelediting)

Floppy disc or magnetic disc are faster and mor flexible than tapes. you can load and store autonom (no start and stop) and not linear, you can store them here or there. but of course also expensiver (you cant anymore use a (music) tapedrive.