Is coin always be earning free?

Could you elaborate on the statement "Is coin always be earning free?"? In the context of cryptocurrency and finance, coins or tokens are digital assets that have a certain value. While there are various methods of earning coins or tokens without direct financial investment, such as through mining rewards, staking incentives, or airdrops, it is important to note that these methods are not always "free." Mining, for instance, requires significant computational power and electricity, which have associated costs. Staking may require locking up coins for a certain period of time, thus restricting liquidity. Airdrops, while seemingly free, are often tied to marketing efforts or require some form of participation, such as social media engagement. So, while there are avenues to acquire coins without upfront financial investment, it's crucial to understand that there are often associated costs or limitations. Would you agree that the statement "Is coin always be earning free?" should be interpreted with this context in mind?