Citation needed. Vast swathes of land are kept by "the crown" and are underdeveloped, ecological dead zones or not accessible to the public. It's a hard argument to make that they are contributing to the economy (especially in Scotland) when the land is locked away from the locals control and beholden to interests of the literal London Elite.

Okay honey. Here

but I think taking control of the crown estates and putting them to better use is a sound economic and ecological argument

Okay and once we seize private property and now nobody wants to invest in the UK for fear that political misalignment may have their assets seized, contributing to a severe reduction in value for the UK - what happens? The economic effects will be disastrous compared to what the Royal Family take up (which is negative, again, as we make a profit).

Look at Holyrood Park as well, covered in gorse that's going on fire with increasing frequency. A better custodian of the estate would have been trying to diversify the plant life on the estate long ago.

Ok?

The greater the biodiversity in an area, the greater the tourist opportunity, from both locals and afar. Just look at how rammed any Botanic Gardens are on a nice summer day.

Please source this specifying crown estate lands, thanks.