Unlike Germany. So DFS can keep winning contracts here and we can't touch theirs
Not really true, DFS lost a few towers to austrocontrol already.
What are the movement rates for these Airports, are they 24/7, do they have radar etc?
DRS: ATC is H24, however no landing and takeoff allowed between 2100 - 0500, except scheduled traffic that which cannot take off and land between 2230 and 0430 with a grace period of 30 minutes. Has seen a severe reduction in traffic in the last few years. Last year, as mentioned, 30.370 movements.
ERF: ATC is H24, some restrictions exists for landings between 2200 - 0500, however most common types can land during that time. Has seen a severe reduction in traffic in the last few years. Last year 9.259 movements.
SCN: ATC is available 0500 - 2130, for delayed landings until 2300. Last movement figures i have are from 2013, 11.124 in total. That figure is about to raise somewhat as Zweibrücken Airport close by is broke and closed for scheduled traffic, available PPR.
All times are german local times as far as i can tell.