Here's a brief overview of how IFRS 15 may affect specific industries:

1. Telecommunications: Telecommunication companies often bundle products and services together (like a mobile phone contract that includes a handset, data, voice minutes, and texts). Under IFRS 15, companies need to allocate the transaction price to the separate performance obligations in a contract, which can impact when and how much revenue is recognized. This could significantly change the revenue profile of these businesses, especially if there is a delay in the recognition of some elements of the bundled offerings.
2. Real Estate: For real estate companies, one of the key impacts of IFRS 15 is the requirement to recognize revenue over time if the customer controls the asset as it's created or enhanced. This can significantly accelerate revenue recognition for many property developers. Also, for contracts that include more than one performance obligation (for example, sale of a property and provision of property management services), companies will need to allocate the transaction price to each performance obligation.
3. Software: Software companies often have multiple performance obligations in their contracts, including licenses, updates, and support services. Under IFRS 15, these obligations need to be identified and the transaction price allocated between them. Also, licenses are either distinct or not distinct from other goods and services, affecting the pattern of revenue recognition. This can significantly change the timing of revenue recognition, particularly for those companies that bundle their products and services.

In all cases, IFRS 15 can require significant judgment, and companies may need to change their systems and processes to gather the necessary data. It also requires more detailed disclosures, which can have a major impact on a company's financial reporting processes.

Let's delve into specific examples for each industry:

1. Telecommunications: Let's consider a telecom company offering a 2-year contract with a free handset included. The total contract cost is $1000. Under IFRS 15, the company needs to identify distinct performance obligations - in this case, the handset and the network service. Let's say the standalone selling price for the handset is $400 and the network service $600. Even though the customer doesn't pay separately for the handset, the company has to recognize $400 of the total contract price as revenue when the control of the handset is transferred to the customer (typically when the customer signs the contract and receives the handset). The remaining $600 is recognized over the term of the contract (2 years in this case).
2. Real Estate: Consider a real estate developer constructing a building for a client. The contract states that the client can request changes during the construction and that the property cannot be sold to another party. This indicates that the client controls the asset as it is being created. Under IFRS 15, the developer recognizes revenue over time, as it fulfills the performance obligation. This could be based on costs incurred, progress towards completion, or another suitable measure.
3. Software: Imagine a software company that sells a software license bundled with a 1-year customer support service for $1200. The standalone selling price of the software license is $1000 and the customer support service is $300. Under IFRS 15, the company needs to allocate the transaction price based on relative standalone selling prices. The company would recognize $857 ($1000/$1300 * $1200) when the software is delivered, and $343 ($300/$1300 * $1200) ratably over the term of the service period.

In all these examples, IFRS 15 affects when and how revenue is recognized, providing more accurate and useful information to users of financial statements.