Seeing that Del Bosque is insisting on playing without a real striker in the Euro games, I came to wonder whether the 4-6-0 tactic he’s trying to implement really ever worked for a team at this level.
I think your question should refer to non-striker tactics and that’s what I will refer to in my answer.
First of all Barcelona are playing, like Spain, without a real striker but they have Messi (Villa who isn’t a typical #9 was injured), and as you can see they are very successful.
You have to read the following amazing and interesting article:
It talks about Roma and Manchester United as an example of top world class clubs who played without a striker.
Then it discuss about the beginning of this non-forward tactic:
That in itself is nothing new. The Austrian ‘Wunderteam’ of the early
1930s had great success with Mathias Sindelar, a centre-forward who
constantly dropped deep, and Vsevolod Bobrov did similarly for the
Dynamo Moscow tourists who so delighted British crowds in 1945. It was
then Nandor Hidegkuti’s role as a deep-lying centre-forward that so
perplexed England when Hungary won 6-3 at Wembley in 1953. ‘The
tragedy to me,’ said England’s centre-half Harry Johnston, ‘was the
utter helplessness… not being able to do anything about it.’ If
Johnston followed Hidegkuti, he left a hole in the centre of England’s
rearguard; if he stayed put, Hidegkuti roamed free.
It is the best article I’ve read about this topic!