Correct.
It is done because the bottom seal on the capacitors (aka caps) break down because they are made from rubber. Inside the capacitor is a electrolytic chemical that is part of its electrical properties. Over time this rubber seal break down then leads to the leakage of an electrolytic chemical onto the board. Since this electrolytic chemical is corrosive, it eats away at the traces (wires) on the board.
Fixing this (recapping) means cleaning the board of this electrolytic goo, removing the caps and replacing them with caps that wont leak (ie: solid state caps like Tantalums, metal oxide or ceramic).
There are many that try to do it themselves as the job is simple to do of unsoldering the old caps and soldering the new caps. But it is not without problems, as the electrolytic goo may have rotten the traces on the board and then it's a game of finding the bad trace and replacing it with a wire over it. Some find this too be too daunting to do. For them it is better to have somebody else to do it, like Uniserver and TechKnight. They're the best and their price is very low!