To sum up, the .com TLD should likely be split up into separate TLDs, corresponding to the Nice classes for international trademarks.

   1 .chem     16 .book     31 .farm
   2 .paint    17 .flex     32 .bev
   3 .clean    18 .skin     33 .booze
   4 .oil      19 .build    34 .smoke
   5 .drug     20 .home     35 .ads / .biz
   6 .metal    21 .ware     36 .fin
   7 .mech     22 .rope     37 .con
   8 .tool     23 .yarn     38 .tel
   9 .sci      24 .tex      39 .mov
  10 .med      25 .cloth    40 .mat
  11 .env      26 .lace     41 .edu / .fun
  12 .wheel    27 .floor    42 .tek / .law
  13 .gun      28 .toy      43 .hos
  14 .bling    29 .meat     44 .doc / .eco
  15 .music    30 .food     45 .soc / .sec

The clear correspondence between domain and Nice category would make it easier to evict name-squatters that are not engaged in the relevant type of business.