There's no point in switching to cartridges or flashcards for home consoles. Pressing a disc is still cheaper. Games need to be installed anyway to make patching easier and keep the digital and physical version the exact same. Smaller packaging is not that desirable. Game boxes only got bigger and more extravagant until some standards were set. You don't get noticed with a tiny flash card, you still need something to put the box art on to catch attention.
Discs are easy to hold, hard to break. No contact slot to get dirty, pins to bend. Tiny flashcards would be a nightmare with kids. Blu-rays are easy, you can simply wash them in the sink if too many sticky fingers get on them. The things are pretty indestructible.
Plus what about movies and backwards compatibility. You need a disc drive anyway.
Physical music still uses CDs, DVDs still come out on DVDs. Digital downloads will simply take over before cartridges get considered.







