Yes, it appears that it's beyond Government thinking that a reduction in the rate might generate a higher return for them.
But, as they've nothing to 'compare' it to in terms of the tax take on ETFs, they may not see a connection. It's quite bizarre that an extremely efficient Revenue have no idea whatsoever how much tax is being collected via this vehicle whilst the Government are reviewing Deemed Disposal in its entirety. From reading the posts on different discussion forums it's clear that, even if investors are self-assessing the tax, there's a risk that it's being done incorrectly. Wonder if they'll ask the platforms to set up systems for individual account calculation and then collect and pay over the tax for/to Revenue.