And how is that Greece will try harder to stay (although worse economy)? Why are ratings higher? Any coincidence that Bulgaria and Croatia that have been screwed over by juries are dropping out while Greece (who if we stick to the economical argument should have already withdrawn by now) are still in? Would Greece stay if they wouldn't have continued ending up top. 10 or would they do a "Turkey" and leave right away moaning?
You honestly think they'd stay in their economical shape if they would have been treated like Bulgaria and Croatia in ESC? I highly doubt it!
Croatia qualified thanks to juries in 2009. In 2010 and 2011, they didn't hit the top-10 in any voting (even Femminem got better result in the jury vote). Nina would've qualified in 2012 with the jury vote. Last year was the only time the juries kicked them out, but they were also in the edge for the televoters anyway. So Croatia can't say they've been robbed by the juries. At all.
Bulgaria could consider itself robbed (or sort of) this year. They were also damaged in 2012, but the margin was very small. On the other hand, Poli Genova got some jury support in 2011, but didn't qualify because she wasn't high enough with the televoters. The rest of the years, Bulgaria's results have been quite poor in general. We can say that televoters benefited more Bulgaria, but not that there is a general boycott from the evil juries to this country.
About, some other withdrawn countries,
Poland has got poor results almost every year in a similar way with televoting and juries.
Slovakia is a similar case and they'd even qualified in 2011 according to the jury vote.
Slovenia (possible withdrawal) always gets bad results and the only good results they have is thanks to the jury.
Cyprus has had similar results in televoting and jury and even Ivi Adamou got more supports from the juries.
So again, why should they withdraw because of the juries? There is no sense about it.
And about the interest in Greece, there can be many factors. Good results and doing a good job during the last 10 years are the main reasons. They usually send well known names to ESC. Bigger tradition too.
So despite the big expense, Eurovision is probably quite profitable in Greece. That's probably the same reason why some western countries with bad results (for example, Spain) are still in.
It looks that's not the case of other countries. With any voting system.