The court a team plays on in front of a crowd is used a few dozen nights a year. The court it practices on is in use nearly every day, and it ages accordingly.
The hours are not comparable
A game occupies a floor for a couple of hours. A practice facility runs shooting work, team sessions, individual development and rehab movement across most of the day.
Youth camps, staff use and visiting groups add more. A training court in a well-used building accumulates in a month what an arena floor sees across a season.
Wear tracks contact hours, not events. That single fact explains why the more visible floor is usually the one in better condition.
Practice load is concentrated in small areas
Games spread movement across the whole floor. Drill work does the opposite, repeating the same cuts and landings in the same spots for hours.
The results are visible as dull patches at the elbows, in the lane and along shooting spots on the arc, where the finish is scuffed through before the rest of the coat is touched.
Those patches are also traction anomalies. A worn area is smoother, and players adjust their footing without consciously noticing the change.
Refinishing is disruptive in a way games are not
Screening and recoating a floor takes it out of service for days, including cure time before anyone can walk on it. That is straightforward to schedule around a game calendar.
It is much harder to schedule around daily training. Facilities with a single court either shut down or move work elsewhere, and neither option is free.
This is the main argument for a second court in a training building. The redundancy is about maintenance windows as much as about running two groups at once.
The subfloor sees a different loading pattern
Resilient subfloors are specified around expected impact cycles. Repetitive jumping and landing in a fixed area works the same pads and clips continuously.
Localized softening shows up as a section that feels different underfoot, and it appears in practice gyms long before it would in an arena.
Diagnosis usually means lifting panels. Because a training floor is often permanently installed rather than portable, that work is more invasive than the equivalent in an arena.
Why the money still goes to the arena
Arena floors are replaced and refinished on visible schedules because they are televised and because sponsor logos and league marks have to look right.
Practice floors compete with everything else in a facility budget, and they degrade gradually rather than failing, so they are easy to defer.
Programs that track court condition seriously treat the practice surface as the one with the shorter design life, and plan its replacement first.

