Pre region we used to average 5,500 to 6,000 in a 7,500 capacity ground now as a semi pro club we get an average home crowd of 2,500 for league games and apart from Ebbw Vale who have a loyal fan base most of the other clubs will struggle to get 1000 unless us or Ebbw are playing away, so the advent of regions hasn't been kind to club rugby in Wales so yes you are right, however the regions attendance figures are exceptionally low and in last Decembers survey by Wales on line several reasons were cited, they were in order -:
1. Lack of Affinity with the regions.
2. Poor product
3. Poor results.
4. Ticket Prices.
5. Weakened Teams.
6. Lack of Atmosphere.
7. Kick off Times.
8. Pro 12.
9. Live TV.
10. Competition with Soccer.
http://www.walesonline.co.uk/sport/rugby/rugby-news/big-welsh-rugby-regional-crowds-8278799
Most of the survey I agree with, but back to your support and comparison with cricket, is there to much international cricket being played ? It does seem to me that rather than central contracts the international cricket calendar is saturated with test match series followed by a one day series and then a 20/20 series after which players are on the plane to the next country of competition, surely that is the main reason England players are not released to their respective counties more often. Rugby players bodies would not be able to take the same volume of games as cricketers so therefore central contracts would not have the same effect in rugby. I may be wrong as I am not an avid follower of cricket but it would appear that was an increase in the number of International cricket matches in recent years possibly due to central contracts and the England and Wales cricket board using the team as a cash cow.
The attendance figures in Welsh rugby would improve if the structure changed, 2 regions, with a stronger 8 club 2nd tier, but due to politics in Welsh rugby it looks unlikely to happen in the near future if at all, which will lead to Wales as a 2nd tier international side in the not to distant future, a lot of it is down to the attitude of 2 of the regions who only care about themselves from the fans to the board and whilst they have friends in high office at the WRU common sense will not prevail.
Welsh rugby below the National side have lost between 10,000 and 20,000 followers as a result of the regions not being thought out properly and grass roots is where it has suffered most.
Most I agree with