I think if we were totally honest we would admit that we buy rentals on the expectation the capital value will increase even if our intent is to invest to derive a weekly income.

Same with shares in a start up that isnt making a profit.

So the capitalist tax avoider in me says no to cspital gains tax.

But the equitable payment of tax on all gain says CGT may make some sense

There will of course be unintended consequences - like rent rising to cover future tax bill or maitenance deferred to accrue for liability.