I know the Enterprise Ireland system quite well and generally don't bother applying for grants because a) being East of the Shannon there's very little available and b) the checks and paperwork is considerable (as it should be).
If you are a manufacturing export company in Ireland you get 0% grant aid for capital investment in machinery. In Northern Ireland you get 50%.
If there is any abuse of the EI grants system it takes place in Universities where professors and medical doctors get large grants to develop Intellectual Property which won't be commercialised in Ireland but will give tax free IP royalties to the University and academics who developed it.
Yeah, I hear you. A friend of mine has received several grants for startups. I remember ringing him 2 years ago and he was popping champagne with his wife as the "IE cheque came in". He did have to complete a lot of paperwork but also got his solr to make sure he would benefit from any upside.
Another friend got a grant which covered his wife working part-time at his start up.
As it turns out, neither business did very much.
Whatever you do in life, tapping your fellow taxpayer should be a last resort. Safety nets are great and as a 1st world country we should be proud of the safety nets we have in place. However, safety nets should be used correctly - to break the fall for someone, but as with real safety nets, the idea is that you get out of the net and start climbing again, rather than staying on the net. As more and more people lie in the net, the net will eventually collapse...