You mean besides limited talent, energy, ambition & inspiration?
The next things would have to be lack of space and disorganization.
I'm pathetically overstacked with high quality recording gear, with not enough room to break it all out at once. Strategic items are accessible, and that's it. The rest is either covered, padded and double-stacked, or in storage cases or boxes. There's also a huge weight machine in the middle of my studio that doesn't really fit. That's a big problem. My house is full of a lot of stuff; the clutter of a family of 6. Noone in the family is an organized type, except me, and I struggle with it too. Sometimes I'm overwhelmed. We're basically packed and double-triple stacked, everywhere you look, with STUFF! Geez, I must have a thousand VHS tapes, alone! Books! Collections! Toys! Exercise equipment! TV's! VCR's! Technical gear! Recording Gear!
Aaaaaaaaaaaaaaarrrrrrrrrrrrrrrrrrrrrrggggggggggggggghhhhhhhhhhh!
I could build a homeless shelter out of Tascam gear. I could support a 3rd world country on what I've spent on gear.
I may also be a hopelessly compulsive pack rat.
The stuff that's really accessible, are
the Squier Bullet, the 388, piano, drums, and,... eh,... a 244 and 234 sittin' by, pretty handy. All my other stuff, recorders by the dozen, are not readily accessible. I could take time to set them up,... however,...
today's pre-production is just tomorrow's nasty mess'o wires.
Or, so it seems.
Anyway, I should add, that anything that's on the top tier of junk is more or less accessible. That includes an FD-8, 564, FD-4, 424mkII, 488mkII & a second 388 rig. Other stuff may be accessible but not wired up. I have a huge rack of Tascam rackmount components. I have various other gear halfway accessible but not hooked up. Almost e'thing's covered in plastic, when not in use, which is most of the time.
When I have energy, ambition & inspiration, I do have a fair amount of stuff that's at least half way accessible, I must admit. A lot of stuff is not clearly accessible or just packed & stacked. A lot of it I'm sure I just take for granted, havin to step over it every day. Maybe it's more of a lazy streak, than anything, that's limiting my recordings. Aaaaaaaaaaaaaarrrrrrrrrrrgggggggggghhhhhhh.