For that use, I would get some Techflex F6 split sleeving, or some of the velcro-closure stuff. Not only does it hold them together, it also provides quite a bit of protection from abrasion if you drag the resulting "snake" around the floor or whatever.
The problem with lacing an assembly that might flex, is that the cord keeps the cables from sliding against each other, and makes the assembly very stiff. So any flexing force is concentrated at points where it can overcome that stiffness, and this is bad for the cables long-term.
Inside equipment, lacing is used to keep wires from abrading against each other. In an office, it's used to secure them to frames for density, organization, and seismic reasons. In all cases, every piece of connected equipment is rigidly mounted, and no part of the laced form ever has to move relative to any other part.
That's what I would get if I were "in industry" and had a lot of cables to deal with. I just have my personal equipment, and one spool of string is very convenient to buy and shove in the closet when I don't need it.
The problem with lacing an assembly that might flex, is that the cord keeps the cables from sliding against each other, and makes the assembly very stiff. So any flexing force is concentrated at points where it can overcome that stiffness, and this is bad for the cables long-term.
Inside equipment, lacing is used to keep wires from abrading against each other. In an office, it's used to secure them to frames for density, organization, and seismic reasons. In all cases, every piece of connected equipment is rigidly mounted, and no part of the laced form ever has to move relative to any other part.